Home / 766,300.80-1,149,451.20-316,872.30

Finding the Fourth Proportional to 766,300.80, 1,149,451.20 and 316,872.30

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Solution

The fourth proportional to 766,300.80, 1,149,451.20 and 316,872.30 is: 475,308.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,300.80 : 1,149,451.20 = 316,872.30 : x
  2. Step 2: Convert to fraction form
    766,300.80/1,149,451.20 = 316,872.30/x
  3. Step 3: Cross multiply
    766,300.80x = 1,149,451.20 × 316,872.30
  4. Step 4: Simplify right side
    766,300.80x = 364,229,245,481.76
  5. Step 5: Solve for x
    x = 364,229,245,481.76/766,300.80
  6. Step 6: Final answer
    x = 475,308.45

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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.