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Finding the Fourth Proportional to 442,937.60, 664,406.40 and 440,313.20

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Solution

The fourth proportional to 442,937.60, 664,406.40 and 440,313.20 is: 660,469.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,937.60 : 664,406.40 = 440,313.20 : x
  2. Step 2: Convert to fraction form
    442,937.60/664,406.40 = 440,313.20/x
  3. Step 3: Cross multiply
    442,937.60x = 664,406.40 × 440,313.20
  4. Step 4: Simplify right side
    442,937.60x = 292,546,908,084.48
  5. Step 5: Solve for x
    x = 292,546,908,084.48/442,937.60
  6. Step 6: Final answer
    x = 660,469.80

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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.