Home / 871,492.80-1,307,239.20-280,516.80

Finding the Fourth Proportional to 871,492.80, 1,307,239.20 and 280,516.80

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Solution

The fourth proportional to 871,492.80, 1,307,239.20 and 280,516.80 is: 420,775.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,492.80 : 1,307,239.20 = 280,516.80 : x
  2. Step 2: Convert to fraction form
    871,492.80/1,307,239.20 = 280,516.80/x
  3. Step 3: Cross multiply
    871,492.80x = 1,307,239.20 × 280,516.80
  4. Step 4: Simplify right side
    871,492.80x = 366,702,557,218.56
  5. Step 5: Solve for x
    x = 366,702,557,218.56/871,492.80
  6. Step 6: Final answer
    x = 420,775.20

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Double scale
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Similar ratio
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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.