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Finding the Fourth Proportional to 529,876.52, 731,219.46 and 291,412.52

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Solution

The fourth proportional to 529,876.52, 731,219.46 and 291,412.52 is: 402,143.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,876.52 : 731,219.46 = 291,412.52 : x
  2. Step 2: Convert to fraction form
    529,876.52/731,219.46 = 291,412.52/x
  3. Step 3: Cross multiply
    529,876.52x = 731,219.46 × 291,412.52
  4. Step 4: Simplify right side
    529,876.52x = 213,086,505,511.64
  5. Step 5: Solve for x
    x = 213,086,505,511.64/529,876.52
  6. Step 6: Final answer
    x = 402,143.70

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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.