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Finding the Fourth Proportional to 838,563.60, 1,257,845.40 and 747,584.40

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Solution

The fourth proportional to 838,563.60, 1,257,845.40 and 747,584.40 is: 1,121,376.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    838,563.60 : 1,257,845.40 = 747,584.40 : x
  2. Step 2: Convert to fraction form
    838,563.60/1,257,845.40 = 747,584.40/x
  3. Step 3: Cross multiply
    838,563.60x = 1,257,845.40 × 747,584.40
  4. Step 4: Simplify right side
    838,563.60x = 940,345,598,651.76
  5. Step 5: Solve for x
    x = 940,345,598,651.76/838,563.60
  6. Step 6: Final answer
    x = 1,121,376.60

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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.