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Finding the Fourth Proportional to 442,964.60, 664,446.90 and 440,340.20

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Solution

The fourth proportional to 442,964.60, 664,446.90 and 440,340.20 is: 660,510.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,964.60 : 664,446.90 = 440,340.20 : x
  2. Step 2: Convert to fraction form
    442,964.60/664,446.90 = 440,340.20/x
  3. Step 3: Cross multiply
    442,964.60x = 664,446.90 × 440,340.20
  4. Step 4: Simplify right side
    442,964.60x = 292,582,680,835.38
  5. Step 5: Solve for x
    x = 292,582,680,835.38/442,964.60
  6. Step 6: Final answer
    x = 660,510.30

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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.