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Finding the Fourth Proportional to 672,342.85, 1,007,366.10 and 316,627.30

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Solution

The fourth proportional to 672,342.85, 1,007,366.10 and 316,627.30 is: 474,400.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,342.85 : 1,007,366.10 = 316,627.30 : x
  2. Step 2: Convert to fraction form
    672,342.85/1,007,366.10 = 316,627.30/x
  3. Step 3: Cross multiply
    672,342.85x = 1,007,366.10 × 316,627.30
  4. Step 4: Simplify right side
    672,342.85x = 318,959,608,354.53
  5. Step 5: Solve for x
    x = 318,959,608,354.53/672,342.85
  6. Step 6: Final answer
    x = 474,400.24

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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.