Home / 705,904.30-1,058,856.45-407,305.90

Finding the Fourth Proportional to 705,904.30, 1,058,856.45 and 407,305.90

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Solution

The fourth proportional to 705,904.30, 1,058,856.45 and 407,305.90 is: 610,958.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,904.30 : 1,058,856.45 = 407,305.90 : x
  2. Step 2: Convert to fraction form
    705,904.30/1,058,856.45 = 407,305.90/x
  3. Step 3: Cross multiply
    705,904.30x = 1,058,856.45 × 407,305.90
  4. Step 4: Simplify right side
    705,904.30x = 431,278,479,338.06
  5. Step 5: Solve for x
    x = 431,278,479,338.06/705,904.30
  6. Step 6: Final answer
    x = 610,958.85

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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.