Home / 787,687.20-1,181,530.80-471,981.60

Finding the Fourth Proportional to 787,687.20, 1,181,530.80 and 471,981.60

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Solution

The fourth proportional to 787,687.20, 1,181,530.80 and 471,981.60 is: 707,972.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,687.20 : 1,181,530.80 = 471,981.60 : x
  2. Step 2: Convert to fraction form
    787,687.20/1,181,530.80 = 471,981.60/x
  3. Step 3: Cross multiply
    787,687.20x = 1,181,530.80 × 471,981.60
  4. Step 4: Simplify right side
    787,687.20x = 557,660,797,433.28
  5. Step 5: Solve for x
    x = 557,660,797,433.28/787,687.20
  6. Step 6: Final answer
    x = 707,972.40

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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.