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Finding the Fourth Proportional to 881,207.80, 1,321,811.70 and 765,734.20

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Solution

The fourth proportional to 881,207.80, 1,321,811.70 and 765,734.20 is: 1,148,601.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    881,207.80 : 1,321,811.70 = 765,734.20 : x
  2. Step 2: Convert to fraction form
    881,207.80/1,321,811.70 = 765,734.20/x
  3. Step 3: Cross multiply
    881,207.80x = 1,321,811.70 × 765,734.20
  4. Step 4: Simplify right side
    881,207.80x = 1,012,156,424,650.14
  5. Step 5: Solve for x
    x = 1,012,156,424,650.14/881,207.80
  6. Step 6: Final answer
    x = 1,148,601.30

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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.