Home / 1,245,517,140.10-1,868,275,710.15-786,869,997.70

Finding the Fourth Proportional to 1,245,517,140.10, 1,868,275,710.15 and 786,869,997.70

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Solution

The fourth proportional to 1,245,517,140.10, 1,868,275,710.15 and 786,869,997.70 is: 1,180,304,996.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245,517,140.10 : 1,868,275,710.15 = 786,869,997.70 : x
  2. Step 2: Convert to fraction form
    1,245,517,140.10/1,868,275,710.15 = 786,869,997.70/x
  3. Step 3: Cross multiply
    1,245,517,140.10x = 1,868,275,710.15 × 786,869,997.70
  4. Step 4: Simplify right side
    1,245,517,140.10x = 1,470,090,103,748,696,576
  5. Step 5: Solve for x
    x = 1,470,090,103,748,696,576/1,245,517,140.10
  6. Step 6: Final answer
    x = 1,180,304,996.55

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Half scale
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Double scale
Find fourth proportional to 1,245,517,141.10, 1,868,275,711.65 and 786,869,998.70
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.