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Finding the Fourth Proportional to 570,755,488.80, 787,594,468.32 and 316,443,631.44

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Solution

The fourth proportional to 570,755,488.80, 787,594,468.32 and 316,443,631.44 is: 436,665,539.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,755,488.80 : 787,594,468.32 = 316,443,631.44 : x
  2. Step 2: Convert to fraction form
    570,755,488.80/787,594,468.32 = 316,443,631.44/x
  3. Step 3: Cross multiply
    570,755,488.80x = 787,594,468.32 × 316,443,631.44
  4. Step 4: Simplify right side
    570,755,488.80x = 249,229,253,657,236,864
  5. Step 5: Solve for x
    x = 249,229,253,657,236,864/570,755,488.80
  6. Step 6: Final answer
    x = 436,665,539.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.