Home / 739,071.96-1,019,922.12-412,398.76

Finding the Fourth Proportional to 739,071.96, 1,019,922.12 and 412,398.76

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Solution

The fourth proportional to 739,071.96, 1,019,922.12 and 412,398.76 is: 569,111.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,071.96 : 1,019,922.12 = 412,398.76 : x
  2. Step 2: Convert to fraction form
    739,071.96/1,019,922.12 = 412,398.76/x
  3. Step 3: Cross multiply
    739,071.96x = 1,019,922.12 × 412,398.76
  4. Step 4: Simplify right side
    739,071.96x = 420,614,617,584.57
  5. Step 5: Solve for x
    x = 420,614,617,584.57/739,071.96
  6. Step 6: Final answer
    x = 569,111.86

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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.