Home / 912,658.20-1,368,987.30-614,059.80

Finding the Fourth Proportional to 912,658.20, 1,368,987.30 and 614,059.80

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Solution

The fourth proportional to 912,658.20, 1,368,987.30 and 614,059.80 is: 921,089.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,658.20 : 1,368,987.30 = 614,059.80 : x
  2. Step 2: Convert to fraction form
    912,658.20/1,368,987.30 = 614,059.80/x
  3. Step 3: Cross multiply
    912,658.20x = 1,368,987.30 × 614,059.80
  4. Step 4: Simplify right side
    912,658.20x = 840,640,067,640.54
  5. Step 5: Solve for x
    x = 840,640,067,640.54/912,658.20
  6. Step 6: Final answer
    x = 921,089.70

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.