Home / 689,401.38-951,400.97-417,315.34

Finding the Fourth Proportional to 689,401.38, 951,400.97 and 417,315.34

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Solution

The fourth proportional to 689,401.38, 951,400.97 and 417,315.34 is: 575,911.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,401.38 : 951,400.97 = 417,315.34 : x
  2. Step 2: Convert to fraction form
    689,401.38/951,400.97 = 417,315.34/x
  3. Step 3: Cross multiply
    689,401.38x = 951,400.97 × 417,315.34
  4. Step 4: Simplify right side
    689,401.38x = 397,034,218,765.79
  5. Step 5: Solve for x
    x = 397,034,218,765.79/689,401.38
  6. Step 6: Final answer
    x = 575,911.55

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Half scale
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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.