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Finding the Fourth Proportional to 398,581,497.60, 597,872,246.40 and 253,657,536.90

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Solution

The fourth proportional to 398,581,497.60, 597,872,246.40 and 253,657,536.90 is: 380,486,305.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,581,497.60 : 597,872,246.40 = 253,657,536.90 : x
  2. Step 2: Convert to fraction form
    398,581,497.60/597,872,246.40 = 253,657,536.90/x
  3. Step 3: Cross multiply
    398,581,497.60x = 597,872,246.40 × 253,657,536.90
  4. Step 4: Simplify right side
    398,581,497.60x = 151,654,801,402,693,888
  5. Step 5: Solve for x
    x = 151,654,801,402,693,888/398,581,497.60
  6. Step 6: Final answer
    x = 380,486,305.35

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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.