Home / 871,307.70-1,306,961.55-231,610.20

Finding the Fourth Proportional to 871,307.70, 1,306,961.55 and 231,610.20

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Solution

The fourth proportional to 871,307.70, 1,306,961.55 and 231,610.20 is: 347,415.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,307.70 : 1,306,961.55 = 231,610.20 : x
  2. Step 2: Convert to fraction form
    871,307.70/1,306,961.55 = 231,610.20/x
  3. Step 3: Cross multiply
    871,307.70x = 1,306,961.55 × 231,610.20
  4. Step 4: Simplify right side
    871,307.70x = 302,705,625,987.81
  5. Step 5: Solve for x
    x = 302,705,625,987.81/871,307.70
  6. Step 6: Final answer
    x = 347,415.30

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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.