Home / 1,781,034.06-2,669,965.46-643,542.56

Finding the Fourth Proportional to 1,781,034.06, 2,669,965.46 and 643,542.56

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Solution

The fourth proportional to 1,781,034.06, 2,669,965.46 and 643,542.56 is: 964,740.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,781,034.06 : 2,669,965.46 = 643,542.56 : x
  2. Step 2: Convert to fraction form
    1,781,034.06/2,669,965.46 = 643,542.56/x
  3. Step 3: Cross multiply
    1,781,034.06x = 2,669,965.46 × 643,542.56
  4. Step 4: Simplify right side
    1,781,034.06x = 1,718,236,407,239.98
  5. Step 5: Solve for x
    x = 1,718,236,407,239.98/1,781,034.06
  6. Step 6: Final answer
    x = 964,740.90

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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.