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Finding the Fourth Proportional to 881,206.80, 1,321,810.20 and 765,733.20

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Solution

The fourth proportional to 881,206.80, 1,321,810.20 and 765,733.20 is: 1,148,599.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    881,206.80 : 1,321,810.20 = 765,733.20 : x
  2. Step 2: Convert to fraction form
    881,206.80/1,321,810.20 = 765,733.20/x
  3. Step 3: Cross multiply
    881,206.80x = 1,321,810.20 × 765,733.20
  4. Step 4: Simplify right side
    881,206.80x = 1,012,153,954,238.64
  5. Step 5: Solve for x
    x = 1,012,153,954,238.64/881,206.80
  6. Step 6: Final answer
    x = 1,148,599.80

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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.