Home / 766,496.80-1,149,745.20-366,931.90

Finding the Fourth Proportional to 766,496.80, 1,149,745.20 and 366,931.90

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Solution

The fourth proportional to 766,496.80, 1,149,745.20 and 366,931.90 is: 550,397.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,496.80 : 1,149,745.20 = 366,931.90 : x
  2. Step 2: Convert to fraction form
    766,496.80/1,149,745.20 = 366,931.90/x
  3. Step 3: Cross multiply
    766,496.80x = 1,149,745.20 × 366,931.90
  4. Step 4: Simplify right side
    766,496.80x = 421,878,190,751.88
  5. Step 5: Solve for x
    x = 421,878,190,751.88/766,496.80
  6. Step 6: Final answer
    x = 550,397.85

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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.