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Finding the Fourth Proportional to 437,439.60, 656,159.40 and 394,585.20

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Solution

The fourth proportional to 437,439.60, 656,159.40 and 394,585.20 is: 591,877.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,439.60 : 656,159.40 = 394,585.20 : x
  2. Step 2: Convert to fraction form
    437,439.60/656,159.40 = 394,585.20/x
  3. Step 3: Cross multiply
    437,439.60x = 656,159.40 × 394,585.20
  4. Step 4: Simplify right side
    437,439.60x = 258,910,788,080.88
  5. Step 5: Solve for x
    x = 258,910,788,080.88/437,439.60
  6. Step 6: Final answer
    x = 591,877.80

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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.