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Finding the Fourth Proportional to 529,479.34, 730,687.14 and 287,761.94

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Solution

The fourth proportional to 529,479.34, 730,687.14 and 287,761.94 is: 397,114.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,479.34 : 730,687.14 = 287,761.94 : x
  2. Step 2: Convert to fraction form
    529,479.34/730,687.14 = 287,761.94/x
  3. Step 3: Cross multiply
    529,479.34x = 730,687.14 × 287,761.94
  4. Step 4: Simplify right side
    529,479.34x = 210,263,948,939.45
  5. Step 5: Solve for x
    x = 210,263,948,939.45/529,479.34
  6. Step 6: Final answer
    x = 397,114.55

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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.