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Finding the Fourth Proportional to 522,906.80, 784,360.20 and 487,477.40

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Solution

The fourth proportional to 522,906.80, 784,360.20 and 487,477.40 is: 731,216.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,906.80 : 784,360.20 = 487,477.40 : x
  2. Step 2: Convert to fraction form
    522,906.80/784,360.20 = 487,477.40/x
  3. Step 3: Cross multiply
    522,906.80x = 784,360.20 × 487,477.40
  4. Step 4: Simplify right side
    522,906.80x = 382,357,870,959.48
  5. Step 5: Solve for x
    x = 382,357,870,959.48/522,906.80
  6. Step 6: Final answer
    x = 731,216.10

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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.