Home / 1,225,140.53-1,690,546.96-681,139.73

Finding the Fourth Proportional to 1,225,140.53, 1,690,546.96 and 681,139.73

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Solution

The fourth proportional to 1,225,140.53, 1,690,546.96 and 681,139.73 is: 939,891.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225,140.53 : 1,690,546.96 = 681,139.73 : x
  2. Step 2: Convert to fraction form
    1,225,140.53/1,690,546.96 = 681,139.73/x
  3. Step 3: Cross multiply
    1,225,140.53x = 1,690,546.96 × 681,139.73
  4. Step 4: Simplify right side
    1,225,140.53x = 1,151,498,699,886.72
  5. Step 5: Solve for x
    x = 1,151,498,699,886.72/1,225,140.53
  6. Step 6: Final answer
    x = 939,891.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.