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Finding the Fourth Proportional to 486,687.60, 730,031.40 and 486,687.60

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Solution

The fourth proportional to 486,687.60, 730,031.40 and 486,687.60 is: 730,031.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,687.60 : 730,031.40 = 486,687.60 : x
  2. Step 2: Convert to fraction form
    486,687.60/730,031.40 = 486,687.60/x
  3. Step 3: Cross multiply
    486,687.60x = 730,031.40 × 486,687.60
  4. Step 4: Simplify right side
    486,687.60x = 355,297,229,990.64
  5. Step 5: Solve for x
    x = 355,297,229,990.64/486,687.60
  6. Step 6: Final answer
    x = 730,031.40

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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.