Home / 709,436.28-979,143.66-677,548.92

Finding the Fourth Proportional to 709,436.28, 979,143.66 and 677,548.92

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Solution

The fourth proportional to 709,436.28, 979,143.66 and 677,548.92 is: 935,133.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,436.28 : 979,143.66 = 677,548.92 : x
  2. Step 2: Convert to fraction form
    709,436.28/979,143.66 = 677,548.92/x
  3. Step 3: Cross multiply
    709,436.28x = 979,143.66 × 677,548.92
  4. Step 4: Simplify right side
    709,436.28x = 663,417,729,357.85
  5. Step 5: Solve for x
    x = 663,417,729,357.85/709,436.28
  6. Step 6: Final answer
    x = 935,133.64

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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.