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Finding the Fourth Proportional to 442,955.60, 664,433.40 and 440,331.20

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Solution

The fourth proportional to 442,955.60, 664,433.40 and 440,331.20 is: 660,496.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,955.60 : 664,433.40 = 440,331.20 : x
  2. Step 2: Convert to fraction form
    442,955.60/664,433.40 = 440,331.20/x
  3. Step 3: Cross multiply
    442,955.60x = 664,433.40 × 440,331.20
  4. Step 4: Simplify right side
    442,955.60x = 292,570,756,342.08
  5. Step 5: Solve for x
    x = 292,570,756,342.08/442,955.60
  6. Step 6: Final answer
    x = 660,496.80

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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.