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Finding the Fourth Proportional to 519,972.89, 717,496.61 and 305,034.53

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Solution

The fourth proportional to 519,972.89, 717,496.61 and 305,034.53 is: 420,908.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,972.89 : 717,496.61 = 305,034.53 : x
  2. Step 2: Convert to fraction form
    519,972.89/717,496.61 = 305,034.53/x
  3. Step 3: Cross multiply
    519,972.89x = 717,496.61 × 305,034.53
  4. Step 4: Simplify right side
    519,972.89x = 218,861,236,095.29
  5. Step 5: Solve for x
    x = 218,861,236,095.29/519,972.89
  6. Step 6: Final answer
    x = 420,908.94

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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.