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Finding the Fourth Proportional to 440,489.40, 660,734.10 and 307,629.15

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Solution

The fourth proportional to 440,489.40, 660,734.10 and 307,629.15 is: 461,443.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,489.40 : 660,734.10 = 307,629.15 : x
  2. Step 2: Convert to fraction form
    440,489.40/660,734.10 = 307,629.15/x
  3. Step 3: Cross multiply
    440,489.40x = 660,734.10 × 307,629.15
  4. Step 4: Simplify right side
    440,489.40x = 203,261,069,559.02
  5. Step 5: Solve for x
    x = 203,261,069,559.02/440,489.40
  6. Step 6: Final answer
    x = 461,443.73

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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.