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Finding the Fourth Proportional to 522,902.80, 784,354.20 and 487,473.40

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Solution

The fourth proportional to 522,902.80, 784,354.20 and 487,473.40 is: 731,210.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,902.80 : 784,354.20 = 487,473.40 : x
  2. Step 2: Convert to fraction form
    522,902.80/784,354.20 = 487,473.40/x
  3. Step 3: Cross multiply
    522,902.80x = 784,354.20 × 487,473.40
  4. Step 4: Simplify right side
    522,902.80x = 382,351,808,678.28
  5. Step 5: Solve for x
    x = 382,351,808,678.28/522,902.80
  6. Step 6: Final answer
    x = 731,210.10

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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.