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Finding the Fourth Proportional to 529,627.47, 730,877.30 and 287,916.13

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Solution

The fourth proportional to 529,627.47, 730,877.30 and 287,916.13 is: 397,319.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,627.47 : 730,877.30 = 287,916.13 : x
  2. Step 2: Convert to fraction form
    529,627.47/730,877.30 = 287,916.13/x
  3. Step 3: Cross multiply
    529,627.47x = 730,877.30 × 287,916.13
  4. Step 4: Simplify right side
    529,627.47x = 210,431,363,720.85
  5. Step 5: Solve for x
    x = 210,431,363,720.85/529,627.47
  6. Step 6: Final answer
    x = 397,319.58

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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.