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Finding the Fourth Proportional to 656,048.80, 984,073.20 and 419,658.40

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Solution

The fourth proportional to 656,048.80, 984,073.20 and 419,658.40 is: 629,487.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,048.80 : 984,073.20 = 419,658.40 : x
  2. Step 2: Convert to fraction form
    656,048.80/984,073.20 = 419,658.40/x
  3. Step 3: Cross multiply
    656,048.80x = 984,073.20 × 419,658.40
  4. Step 4: Simplify right side
    656,048.80x = 412,974,584,594.88
  5. Step 5: Solve for x
    x = 412,974,584,594.88/656,048.80
  6. Step 6: Final answer
    x = 629,487.60

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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.