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Finding the Fourth Proportional to 709,082.60, 979,808.30 and 539,021.48

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Solution

The fourth proportional to 709,082.60, 979,808.30 and 539,021.48 is: 744,818.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,082.60 : 979,808.30 = 539,021.48 : x
  2. Step 2: Convert to fraction form
    709,082.60/979,808.30 = 539,021.48/x
  3. Step 3: Cross multiply
    709,082.60x = 979,808.30 × 539,021.48
  4. Step 4: Simplify right side
    709,082.60x = 528,137,719,982.28
  5. Step 5: Solve for x
    x = 528,137,719,982.28/709,082.60
  6. Step 6: Final answer
    x = 744,818.33

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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.