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Finding the Fourth Proportional to 528,642.50, 728,990.42 and 452,414.61

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Solution

The fourth proportional to 528,642.50, 728,990.42 and 452,414.61 is: 623,873.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,642.50 : 728,990.42 = 452,414.61 : x
  2. Step 2: Convert to fraction form
    528,642.50/728,990.42 = 452,414.61/x
  3. Step 3: Cross multiply
    528,642.50x = 728,990.42 × 452,414.61
  4. Step 4: Simplify right side
    528,642.50x = 329,805,914,295.96
  5. Step 5: Solve for x
    x = 329,805,914,295.96/528,642.50
  6. Step 6: Final answer
    x = 623,873.26

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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.