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Finding the Fourth Proportional to 500,711.68, 691,046.48 and 285,802.56

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Solution

The fourth proportional to 500,711.68, 691,046.48 and 285,802.56 is: 394,444.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,711.68 : 691,046.48 = 285,802.56 : x
  2. Step 2: Convert to fraction form
    500,711.68/691,046.48 = 285,802.56/x
  3. Step 3: Cross multiply
    500,711.68x = 691,046.48 × 285,802.56
  4. Step 4: Simplify right side
    500,711.68x = 197,502,853,062.99
  5. Step 5: Solve for x
    x = 197,502,853,062.99/500,711.68
  6. Step 6: Final answer
    x = 394,444.27

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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.