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Finding the Fourth Proportional to 1,092,947.20, 1,640,649.60 and 844,729.60

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Solution

The fourth proportional to 1,092,947.20, 1,640,649.60 and 844,729.60 is: 1,268,044.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,092,947.20 : 1,640,649.60 = 844,729.60 : x
  2. Step 2: Convert to fraction form
    1,092,947.20/1,640,649.60 = 844,729.60/x
  3. Step 3: Cross multiply
    1,092,947.20x = 1,640,649.60 × 844,729.60
  4. Step 4: Simplify right side
    1,092,947.20x = 1,385,905,280,348.16
  5. Step 5: Solve for x
    x = 1,385,905,280,348.16/1,092,947.20
  6. Step 6: Final answer
    x = 1,268,044.13

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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.