Home / 752,146.80-1,128,220.20-699,658.80

Finding the Fourth Proportional to 752,146.80, 1,128,220.20 and 699,658.80

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Solution

The fourth proportional to 752,146.80, 1,128,220.20 and 699,658.80 is: 1,049,488.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    752,146.80 : 1,128,220.20 = 699,658.80 : x
  2. Step 2: Convert to fraction form
    752,146.80/1,128,220.20 = 699,658.80/x
  3. Step 3: Cross multiply
    752,146.80x = 1,128,220.20 × 699,658.80
  4. Step 4: Simplify right side
    752,146.80x = 789,369,191,267.76
  5. Step 5: Solve for x
    x = 789,369,191,267.76/752,146.80
  6. Step 6: Final answer
    x = 1,049,488.20

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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.