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Finding the Fourth Proportional to 1,213,699.97, 1,811,321.20 and 1,079,182.46

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Solution

The fourth proportional to 1,213,699.97, 1,811,321.20 and 1,079,182.46 is: 1,610,567.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213,699.97 : 1,811,321.20 = 1,079,182.46 : x
  2. Step 2: Convert to fraction form
    1,213,699.97/1,811,321.20 = 1,079,182.46/x
  3. Step 3: Cross multiply
    1,213,699.97x = 1,811,321.20 × 1,079,182.46
  4. Step 4: Simplify right side
    1,213,699.97x = 1,954,746,068,466.15
  5. Step 5: Solve for x
    x = 1,954,746,068,466.15/1,213,699.97
  6. Step 6: Final answer
    x = 1,610,567.78

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.