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Finding the Fourth Proportional to 529,638.74, 730,892.84 and 287,927.39

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Solution

The fourth proportional to 529,638.74, 730,892.84 and 287,927.39 is: 397,335.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,638.74 : 730,892.84 = 287,927.39 : x
  2. Step 2: Convert to fraction form
    529,638.74/730,892.84 = 287,927.39/x
  3. Step 3: Cross multiply
    529,638.74x = 730,892.84 × 287,927.39
  4. Step 4: Simplify right side
    529,638.74x = 210,444,062,696.79
  5. Step 5: Solve for x
    x = 210,444,062,696.79/529,638.74
  6. Step 6: Final answer
    x = 397,335.11

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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.