Home / 709,433.28-979,139.52-677,545.92

Finding the Fourth Proportional to 709,433.28, 979,139.52 and 677,545.92

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Solution

The fourth proportional to 709,433.28, 979,139.52 and 677,545.92 is: 935,129.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,433.28 : 979,139.52 = 677,545.92 : x
  2. Step 2: Convert to fraction form
    709,433.28/979,139.52 = 677,545.92/x
  3. Step 3: Cross multiply
    709,433.28x = 979,139.52 × 677,545.92
  4. Step 4: Simplify right side
    709,433.28x = 663,411,986,886.76
  5. Step 5: Solve for x
    x = 663,411,986,886.76/709,433.28
  6. Step 6: Final answer
    x = 935,129.50

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Double scale
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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.