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Finding the Fourth Proportional to 522,906.30, 784,359.45 and 487,476.90

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Solution

The fourth proportional to 522,906.30, 784,359.45 and 487,476.90 is: 731,215.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,906.30 : 784,359.45 = 487,476.90 : x
  2. Step 2: Convert to fraction form
    522,906.30/784,359.45 = 487,476.90/x
  3. Step 3: Cross multiply
    522,906.30x = 784,359.45 × 487,476.90
  4. Step 4: Simplify right side
    522,906.30x = 382,357,113,171.71
  5. Step 5: Solve for x
    x = 382,357,113,171.71/522,906.30
  6. Step 6: Final answer
    x = 731,215.35

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Double scale
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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.