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Finding the Fourth Proportional to 486,764.59, 729,155.43 and 397,126.75

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Solution

The fourth proportional to 486,764.59, 729,155.43 and 397,126.75 is: 594,881.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,764.59 : 729,155.43 = 397,126.75 : x
  2. Step 2: Convert to fraction form
    486,764.59/729,155.43 = 397,126.75/x
  3. Step 3: Cross multiply
    486,764.59x = 729,155.43 × 397,126.75
  4. Step 4: Simplify right side
    486,764.59x = 289,567,126,160.75
  5. Step 5: Solve for x
    x = 289,567,126,160.75/486,764.59
  6. Step 6: Final answer
    x = 594,881.25

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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.