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Finding the Fourth Proportional to 1,294,495.60, 1,941,743.40 and 871,481.20

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Solution

The fourth proportional to 1,294,495.60, 1,941,743.40 and 871,481.20 is: 1,307,221.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,294,495.60 : 1,941,743.40 = 871,481.20 : x
  2. Step 2: Convert to fraction form
    1,294,495.60/1,941,743.40 = 871,481.20/x
  3. Step 3: Cross multiply
    1,294,495.60x = 1,941,743.40 × 871,481.20
  4. Step 4: Simplify right side
    1,294,495.60x = 1,692,192,868,324.08
  5. Step 5: Solve for x
    x = 1,692,192,868,324.08/1,294,495.60
  6. Step 6: Final answer
    x = 1,307,221.80

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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.