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Finding the Fourth Proportional to 440,060.80, 661,500.60 and 408,859.60

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Solution

The fourth proportional to 440,060.80, 661,500.60 and 408,859.60 is: 614,598.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,060.80 : 661,500.60 = 408,859.60 : x
  2. Step 2: Convert to fraction form
    440,060.80/661,500.60 = 408,859.60/x
  3. Step 3: Cross multiply
    440,060.80x = 661,500.60 × 408,859.60
  4. Step 4: Simplify right side
    440,060.80x = 270,460,870,715.76
  5. Step 5: Solve for x
    x = 270,460,870,715.76/440,060.80
  6. Step 6: Final answer
    x = 614,598.87

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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.