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Finding the Fourth Proportional to 522,904.80, 784,357.20 and 487,475.40

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Solution

The fourth proportional to 522,904.80, 784,357.20 and 487,475.40 is: 731,213.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,904.80 : 784,357.20 = 487,475.40 : x
  2. Step 2: Convert to fraction form
    522,904.80/784,357.20 = 487,475.40/x
  3. Step 3: Cross multiply
    522,904.80x = 784,357.20 × 487,475.40
  4. Step 4: Simplify right side
    522,904.80x = 382,354,839,812.88
  5. Step 5: Solve for x
    x = 382,354,839,812.88/522,904.80
  6. Step 6: Final answer
    x = 731,213.10

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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.