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Finding the Fourth Proportional to 664,423.20, 996,634.80 and 625,057.20

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Solution

The fourth proportional to 664,423.20, 996,634.80 and 625,057.20 is: 937,585.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,423.20 : 996,634.80 = 625,057.20 : x
  2. Step 2: Convert to fraction form
    664,423.20/996,634.80 = 625,057.20/x
  3. Step 3: Cross multiply
    664,423.20x = 996,634.80 × 625,057.20
  4. Step 4: Simplify right side
    664,423.20x = 622,953,757,510.56
  5. Step 5: Solve for x
    x = 622,953,757,510.56/664,423.20
  6. Step 6: Final answer
    x = 937,585.80

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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.