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Finding the Fourth Proportional to 663,551,999.80, 995,327,999.70 and 652,802,457.40

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Solution

The fourth proportional to 663,551,999.80, 995,327,999.70 and 652,802,457.40 is: 979,203,686.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,551,999.80 : 995,327,999.70 = 652,802,457.40 : x
  2. Step 2: Convert to fraction form
    663,551,999.80/995,327,999.70 = 652,802,457.40/x
  3. Step 3: Cross multiply
    663,551,999.80x = 995,327,999.70 × 652,802,457.40
  4. Step 4: Simplify right side
    663,551,999.80x = 649,752,564,123,186,432
  5. Step 5: Solve for x
    x = 649,752,564,123,186,432/663,551,999.80
  6. Step 6: Final answer
    x = 979,203,686.10

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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.