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Finding the Fourth Proportional to 529,368.52, 730,527.18 and 287,651.12

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Solution

The fourth proportional to 529,368.52, 730,527.18 and 287,651.12 is: 396,957.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,368.52 : 730,527.18 = 287,651.12 : x
  2. Step 2: Convert to fraction form
    529,368.52/730,527.18 = 287,651.12/x
  3. Step 3: Cross multiply
    529,368.52x = 730,527.18 × 287,651.12
  4. Step 4: Simplify right side
    529,368.52x = 210,136,961,517.44
  5. Step 5: Solve for x
    x = 210,136,961,517.44/529,368.52
  6. Step 6: Final answer
    x = 396,957.80

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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.