Home / 672,665.82-928,278.24-386,203.38

Finding the Fourth Proportional to 672,665.82, 928,278.24 and 386,203.38

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Solution

The fourth proportional to 672,665.82, 928,278.24 and 386,203.38 is: 532,960.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,665.82 : 928,278.24 = 386,203.38 : x
  2. Step 2: Convert to fraction form
    672,665.82/928,278.24 = 386,203.38/x
  3. Step 3: Cross multiply
    672,665.82x = 928,278.24 × 386,203.38
  4. Step 4: Simplify right side
    672,665.82x = 358,504,193,868.45
  5. Step 5: Solve for x
    x = 358,504,193,868.45/672,665.82
  6. Step 6: Final answer
    x = 532,960.32

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.