Home / 1,225,189-1,690,758.66-681,309.64

Finding the Fourth Proportional to 1,225,189, 1,690,758.66 and 681,309.64

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Solution

The fourth proportional to 1,225,189, 1,690,758.66 and 681,309.64 is: 940,206.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225,189 : 1,690,758.66 = 681,309.64 : x
  2. Step 2: Convert to fraction form
    1,225,189/1,690,758.66 = 681,309.64/x
  3. Step 3: Cross multiply
    1,225,189x = 1,690,758.66 × 681,309.64
  4. Step 4: Simplify right side
    1,225,189x = 1,151,930,173,971.48
  5. Step 5: Solve for x
    x = 1,151,930,173,971.48/1,225,189
  6. Step 6: Final answer
    x = 940,206.10

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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.