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Finding the Fourth Proportional to 672,617.60, 928,167.36 and 386,097.92

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Solution

The fourth proportional to 672,617.60, 928,167.36 and 386,097.92 is: 532,789.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,617.60 : 928,167.36 = 386,097.92 : x
  2. Step 2: Convert to fraction form
    672,617.60/928,167.36 = 386,097.92/x
  3. Step 3: Cross multiply
    672,617.60x = 928,167.36 × 386,097.92
  4. Step 4: Simplify right side
    672,617.60x = 358,363,487,107.89
  5. Step 5: Solve for x
    x = 358,363,487,107.89/672,617.60
  6. Step 6: Final answer
    x = 532,789.34

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1.5x scale

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.