Home / 672,067.90-1,008,101.85-388,632.70

Finding the Fourth Proportional to 672,067.90, 1,008,101.85 and 388,632.70

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Solution

The fourth proportional to 672,067.90, 1,008,101.85 and 388,632.70 is: 582,949.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,067.90 : 1,008,101.85 = 388,632.70 : x
  2. Step 2: Convert to fraction form
    672,067.90/1,008,101.85 = 388,632.70/x
  3. Step 3: Cross multiply
    672,067.90x = 1,008,101.85 × 388,632.70
  4. Step 4: Simplify right side
    672,067.90x = 391,781,343,840.50
  5. Step 5: Solve for x
    x = 391,781,343,840.50/672,067.90
  6. Step 6: Final answer
    x = 582,949.05

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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.