Home / 1,321,385.40-1,982,078.10-1,100,935.80

Finding the Fourth Proportional to 1,321,385.40, 1,982,078.10 and 1,100,935.80

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Solution

The fourth proportional to 1,321,385.40, 1,982,078.10 and 1,100,935.80 is: 1,651,403.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,321,385.40 : 1,982,078.10 = 1,100,935.80 : x
  2. Step 2: Convert to fraction form
    1,321,385.40/1,982,078.10 = 1,100,935.80/x
  3. Step 3: Cross multiply
    1,321,385.40x = 1,982,078.10 × 1,100,935.80
  4. Step 4: Simplify right side
    1,321,385.40x = 2,182,140,738,685.98
  5. Step 5: Solve for x
    x = 2,182,140,738,685.98/1,321,385.40
  6. Step 6: Final answer
    x = 1,651,403.70

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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.