Home / 1,320,310,316.10-1,980,465,474.15-1,220,541,125.70

Finding the Fourth Proportional to 1,320,310,316.10, 1,980,465,474.15 and 1,220,541,125.70

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Solution

The fourth proportional to 1,320,310,316.10, 1,980,465,474.15 and 1,220,541,125.70 is: 1,830,811,688.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,310,316.10 : 1,980,465,474.15 = 1,220,541,125.70 : x
  2. Step 2: Convert to fraction form
    1,320,310,316.10/1,980,465,474.15 = 1,220,541,125.70/x
  3. Step 3: Cross multiply
    1,320,310,316.10x = 1,980,465,474.15 × 1,220,541,125.70
  4. Step 4: Simplify right side
    1,320,310,316.10x = 2,417,239,559,229,025,280
  5. Step 5: Solve for x
    x = 2,417,239,559,229,025,280/1,320,310,316.10
  6. Step 6: Final answer
    x = 1,830,811,688.55

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Double scale
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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.