Home / 1,178,998.20-1,768,497.30-431,335.80

Finding the Fourth Proportional to 1,178,998.20, 1,768,497.30 and 431,335.80

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Solution

The fourth proportional to 1,178,998.20, 1,768,497.30 and 431,335.80 is: 647,003.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,178,998.20 : 1,768,497.30 = 431,335.80 : x
  2. Step 2: Convert to fraction form
    1,178,998.20/1,768,497.30 = 431,335.80/x
  3. Step 3: Cross multiply
    1,178,998.20x = 1,768,497.30 × 431,335.80
  4. Step 4: Simplify right side
    1,178,998.20x = 762,816,197,693.34
  5. Step 5: Solve for x
    x = 762,816,197,693.34/1,178,998.20
  6. Step 6: Final answer
    x = 647,003.70

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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.