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Finding the Fourth Proportional to 528,280.80, 729,375.48 and 375,657.36

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Solution

The fourth proportional to 528,280.80, 729,375.48 and 375,657.36 is: 518,654.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,280.80 : 729,375.48 = 375,657.36 : x
  2. Step 2: Convert to fraction form
    528,280.80/729,375.48 = 375,657.36/x
  3. Step 3: Cross multiply
    528,280.80x = 729,375.48 × 375,657.36
  4. Step 4: Simplify right side
    528,280.80x = 273,995,267,265.53
  5. Step 5: Solve for x
    x = 273,995,267,265.53/528,280.80
  6. Step 6: Final answer
    x = 518,654.60

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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.