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Finding the Fourth Proportional to 725,722.68, 1,001,523 and 399,060.56

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Solution

The fourth proportional to 725,722.68, 1,001,523 and 399,060.56 is: 550,717.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,722.68 : 1,001,523 = 399,060.56 : x
  2. Step 2: Convert to fraction form
    725,722.68/1,001,523 = 399,060.56/x
  3. Step 3: Cross multiply
    725,722.68x = 1,001,523 × 399,060.56
  4. Step 4: Simplify right side
    725,722.68x = 399,668,324,225.27
  5. Step 5: Solve for x
    x = 399,668,324,225.27/725,722.68
  6. Step 6: Final answer
    x = 550,717.70

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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.