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Finding the Fourth Proportional to 529,679.43, 730,965.93 and 287,962.93

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Solution

The fourth proportional to 529,679.43, 730,965.93 and 287,962.93 is: 397,393.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,679.43 : 730,965.93 = 287,962.93 : x
  2. Step 2: Convert to fraction form
    529,679.43/730,965.93 = 287,962.93/x
  3. Step 3: Cross multiply
    529,679.43x = 730,965.93 × 287,962.93
  4. Step 4: Simplify right side
    529,679.43x = 210,491,090,932.98
  5. Step 5: Solve for x
    x = 210,491,090,932.98/529,679.43
  6. Step 6: Final answer
    x = 397,393.36

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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.