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Finding the Fourth Proportional to 529,099.68, 730,162.92 and 287,386.98

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Solution

The fourth proportional to 529,099.68, 730,162.92 and 287,386.98 is: 396,596.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,099.68 : 730,162.92 = 287,386.98 : x
  2. Step 2: Convert to fraction form
    529,099.68/730,162.92 = 287,386.98/x
  3. Step 3: Cross multiply
    529,099.68x = 730,162.92 × 287,386.98
  4. Step 4: Simplify right side
    529,099.68x = 209,839,316,486.78
  5. Step 5: Solve for x
    x = 209,839,316,486.78/529,099.68
  6. Step 6: Final answer
    x = 396,596.94

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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.