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Finding the Fourth Proportional to 486,032.20, 729,048.30 and 409,049.80

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Solution

The fourth proportional to 486,032.20, 729,048.30 and 409,049.80 is: 613,574.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,032.20 : 729,048.30 = 409,049.80 : x
  2. Step 2: Convert to fraction form
    486,032.20/729,048.30 = 409,049.80/x
  3. Step 3: Cross multiply
    486,032.20x = 729,048.30 × 409,049.80
  4. Step 4: Simplify right side
    486,032.20x = 298,217,061,305.34
  5. Step 5: Solve for x
    x = 298,217,061,305.34/486,032.20
  6. Step 6: Final answer
    x = 613,574.70

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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.