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Finding the Fourth Proportional to 440,205.60, 660,308.40 and 437,581.20

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Solution

The fourth proportional to 440,205.60, 660,308.40 and 437,581.20 is: 656,371.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,205.60 : 660,308.40 = 437,581.20 : x
  2. Step 2: Convert to fraction form
    440,205.60/660,308.40 = 437,581.20/x
  3. Step 3: Cross multiply
    440,205.60x = 660,308.40 × 437,581.20
  4. Step 4: Simplify right side
    440,205.60x = 288,938,542,042.08
  5. Step 5: Solve for x
    x = 288,938,542,042.08/440,205.60
  6. Step 6: Final answer
    x = 656,371.80

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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.