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Finding the Fourth Proportional to 867,942.80, 1,301,914.20 and 731,085.20

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Solution

The fourth proportional to 867,942.80, 1,301,914.20 and 731,085.20 is: 1,096,627.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,942.80 : 1,301,914.20 = 731,085.20 : x
  2. Step 2: Convert to fraction form
    867,942.80/1,301,914.20 = 731,085.20/x
  3. Step 3: Cross multiply
    867,942.80x = 1,301,914.20 × 731,085.20
  4. Step 4: Simplify right side
    867,942.80x = 951,810,203,289.84
  5. Step 5: Solve for x
    x = 951,810,203,289.84/867,942.80
  6. Step 6: Final answer
    x = 1,096,627.80

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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.