Home / 1,221,189.65-1,685,443.45-677,500.60

Finding the Fourth Proportional to 1,221,189.65, 1,685,443.45 and 677,500.60

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Solution

The fourth proportional to 1,221,189.65, 1,685,443.45 and 677,500.60 is: 935,062.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,189.65 : 1,685,443.45 = 677,500.60 : x
  2. Step 2: Convert to fraction form
    1,221,189.65/1,685,443.45 = 677,500.60/x
  3. Step 3: Cross multiply
    1,221,189.65x = 1,685,443.45 × 677,500.60
  4. Step 4: Simplify right side
    1,221,189.65x = 1,141,888,940,213.85
  5. Step 5: Solve for x
    x = 1,141,888,940,213.85/1,221,189.65
  6. Step 6: Final answer
    x = 935,062.74

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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.