Home / 528,849.92-729,812.85-287,132.52

Finding the Fourth Proportional to 528,849.92, 729,812.85 and 287,132.52

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Solution

The fourth proportional to 528,849.92, 729,812.85 and 287,132.52 is: 396,242.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,849.92 : 729,812.85 = 287,132.52 : x
  2. Step 2: Convert to fraction form
    528,849.92/729,812.85 = 287,132.52/x
  3. Step 3: Cross multiply
    528,849.92x = 729,812.85 × 287,132.52
  4. Step 4: Simplify right side
    528,849.92x = 209,553,002,748.88
  5. Step 5: Solve for x
    x = 209,553,002,748.88/528,849.92
  6. Step 6: Final answer
    x = 396,242.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.