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Finding the Fourth Proportional to 529,727, 731,023.40 and 291,263

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Solution

The fourth proportional to 529,727, 731,023.40 and 291,263 is: 401,943.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,727 : 731,023.40 = 291,263 : x
  2. Step 2: Convert to fraction form
    529,727/731,023.40 = 291,263/x
  3. Step 3: Cross multiply
    529,727x = 731,023.40 × 291,263
  4. Step 4: Simplify right side
    529,727x = 212,920,068,554.20
  5. Step 5: Solve for x
    x = 212,920,068,554.20/529,727
  6. Step 6: Final answer
    x = 401,943.02

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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.