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Finding the Fourth Proportional to 715,094.84, 986,782.38 and 392,818.52

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Solution

The fourth proportional to 715,094.84, 986,782.38 and 392,818.52 is: 542,062.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,094.84 : 986,782.38 = 392,818.52 : x
  2. Step 2: Convert to fraction form
    715,094.84/986,782.38 = 392,818.52/x
  3. Step 3: Cross multiply
    715,094.84x = 986,782.38 × 392,818.52
  4. Step 4: Simplify right side
    715,094.84x = 387,626,394,073.68
  5. Step 5: Solve for x
    x = 387,626,394,073.68/715,094.84
  6. Step 6: Final answer
    x = 542,062.92

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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.