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Finding the Fourth Proportional to 486,767.60, 729,159.92 and 397,129.76

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Solution

The fourth proportional to 486,767.60, 729,159.92 and 397,129.76 is: 594,885.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,767.60 : 729,159.92 = 397,129.76 : x
  2. Step 2: Convert to fraction form
    486,767.60/729,159.92 = 397,129.76/x
  3. Step 3: Cross multiply
    486,767.60x = 729,159.92 × 397,129.76
  4. Step 4: Simplify right side
    486,767.60x = 289,571,104,031.22
  5. Step 5: Solve for x
    x = 289,571,104,031.22/486,767.60
  6. Step 6: Final answer
    x = 594,885.74

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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.