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Finding the Fourth Proportional to 709,081.60, 979,806.92 and 539,020.48

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Solution

The fourth proportional to 709,081.60, 979,806.92 and 539,020.48 is: 744,816.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,081.60 : 979,806.92 = 539,020.48 : x
  2. Step 2: Convert to fraction form
    709,081.60/979,806.92 = 539,020.48/x
  3. Step 3: Cross multiply
    709,081.60x = 979,806.92 × 539,020.48
  4. Step 4: Simplify right side
    709,081.60x = 528,135,996,325.72
  5. Step 5: Solve for x
    x = 528,135,996,325.72/709,081.60
  6. Step 6: Final answer
    x = 744,816.95

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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.