Home / 747,906.40-1,121,130.60-427,729.60

Finding the Fourth Proportional to 747,906.40, 1,121,130.60 and 427,729.60

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Solution

The fourth proportional to 747,906.40, 1,121,130.60 and 427,729.60 is: 641,177.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,906.40 : 1,121,130.60 = 427,729.60 : x
  2. Step 2: Convert to fraction form
    747,906.40/1,121,130.60 = 427,729.60/x
  3. Step 3: Cross multiply
    747,906.40x = 1,121,130.60 × 427,729.60
  4. Step 4: Simplify right side
    747,906.40x = 479,540,743,085.76
  5. Step 5: Solve for x
    x = 479,540,743,085.76/747,906.40
  6. Step 6: Final answer
    x = 641,177.48

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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.