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Finding the Fourth Proportional to 529,029.28, 730,344.72 and 407,905.12

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Solution

The fourth proportional to 529,029.28, 730,344.72 and 407,905.12 is: 563,128.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,029.28 : 730,344.72 = 407,905.12 : x
  2. Step 2: Convert to fraction form
    529,029.28/730,344.72 = 407,905.12/x
  3. Step 3: Cross multiply
    529,029.28x = 730,344.72 × 407,905.12
  4. Step 4: Simplify right side
    529,029.28x = 297,911,350,652.97
  5. Step 5: Solve for x
    x = 297,911,350,652.97/529,029.28
  6. Step 6: Final answer
    x = 563,128.28

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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.