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Finding the Fourth Proportional to 709,083.60, 979,809.68 and 539,022.48

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Solution

The fourth proportional to 709,083.60, 979,809.68 and 539,022.48 is: 744,819.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,083.60 : 979,809.68 = 539,022.48 : x
  2. Step 2: Convert to fraction form
    709,083.60/979,809.68 = 539,022.48/x
  3. Step 3: Cross multiply
    709,083.60x = 979,809.68 × 539,022.48
  4. Step 4: Simplify right side
    709,083.60x = 528,139,443,641.61
  5. Step 5: Solve for x
    x = 528,139,443,641.61/709,083.60
  6. Step 6: Final answer
    x = 744,819.71

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1.5x scale

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.