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Finding the Fourth Proportional to 656,472.80, 984,709.20 and 207,509.04

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Solution

The fourth proportional to 656,472.80, 984,709.20 and 207,509.04 is: 311,263.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,472.80 : 984,709.20 = 207,509.04 : x
  2. Step 2: Convert to fraction form
    656,472.80/984,709.20 = 207,509.04/x
  3. Step 3: Cross multiply
    656,472.80x = 984,709.20 × 207,509.04
  4. Step 4: Simplify right side
    656,472.80x = 204,336,061,549.33
  5. Step 5: Solve for x
    x = 204,336,061,549.33/656,472.80
  6. Step 6: Final answer
    x = 311,263.56

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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.