Home / 871,319.70-1,306,979.55-231,622.20

Finding the Fourth Proportional to 871,319.70, 1,306,979.55 and 231,622.20

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Solution

The fourth proportional to 871,319.70, 1,306,979.55 and 231,622.20 is: 347,433.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,319.70 : 1,306,979.55 = 231,622.20 : x
  2. Step 2: Convert to fraction form
    871,319.70/1,306,979.55 = 231,622.20/x
  3. Step 3: Cross multiply
    871,319.70x = 1,306,979.55 × 231,622.20
  4. Step 4: Simplify right side
    871,319.70x = 302,725,478,726.01
  5. Step 5: Solve for x
    x = 302,725,478,726.01/871,319.70
  6. Step 6: Final answer
    x = 347,433.30

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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.