Home / 529,781.30-731,087.84-288,061.76

Finding the Fourth Proportional to 529,781.30, 731,087.84 and 288,061.76

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Solution

The fourth proportional to 529,781.30, 731,087.84 and 288,061.76 is: 397,519.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,781.30 : 731,087.84 = 288,061.76 : x
  2. Step 2: Convert to fraction form
    529,781.30/731,087.84 = 288,061.76/x
  3. Step 3: Cross multiply
    529,781.30x = 731,087.84 × 288,061.76
  4. Step 4: Simplify right side
    529,781.30x = 210,598,449,905.00
  5. Step 5: Solve for x
    x = 210,598,449,905.00/529,781.30
  6. Step 6: Final answer
    x = 397,519.60

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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.