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Finding the Fourth Proportional to 408,070,877.20, 572,508,551.60 and 408,070,877.20

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Solution

The fourth proportional to 408,070,877.20, 572,508,551.60 and 408,070,877.20 is: 572,508,551.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,070,877.20 : 572,508,551.60 = 408,070,877.20 : x
  2. Step 2: Convert to fraction form
    408,070,877.20/572,508,551.60 = 408,070,877.20/x
  3. Step 3: Cross multiply
    408,070,877.20x = 572,508,551.60 × 408,070,877.20
  4. Step 4: Simplify right side
    408,070,877.20x = 233,624,066,855,913,472
  5. Step 5: Solve for x
    x = 233,624,066,855,913,472/408,070,877.20
  6. Step 6: Final answer
    x = 572,508,551.60

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.