Home / 1,245,517,143.60-1,868,275,715.40-786,870,001.20

Finding the Fourth Proportional to 1,245,517,143.60, 1,868,275,715.40 and 786,870,001.20

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Solution

The fourth proportional to 1,245,517,143.60, 1,868,275,715.40 and 786,870,001.20 is: 1,180,305,001.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245,517,143.60 : 1,868,275,715.40 = 786,870,001.20 : x
  2. Step 2: Convert to fraction form
    1,245,517,143.60/1,868,275,715.40 = 786,870,001.20/x
  3. Step 3: Cross multiply
    1,245,517,143.60x = 1,868,275,715.40 × 786,870,001.20
  4. Step 4: Simplify right side
    1,245,517,143.60x = 1,470,090,114,418,728,960
  5. Step 5: Solve for x
    x = 1,470,090,114,418,728,960/1,245,517,143.60
  6. Step 6: Final answer
    x = 1,180,305,001.80

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Double scale
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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.