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Finding the Fourth Proportional to 604,890.30, 907,335.45 and 392,313.90

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Solution

The fourth proportional to 604,890.30, 907,335.45 and 392,313.90 is: 588,470.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,890.30 : 907,335.45 = 392,313.90 : x
  2. Step 2: Convert to fraction form
    604,890.30/907,335.45 = 392,313.90/x
  3. Step 3: Cross multiply
    604,890.30x = 907,335.45 × 392,313.90
  4. Step 4: Simplify right side
    604,890.30x = 355,960,308,997.76
  5. Step 5: Solve for x
    x = 355,960,308,997.76/604,890.30
  6. Step 6: Final answer
    x = 588,470.85

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Similar ratio
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1.5x scale

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.