Home / 1,207,826.80-1,667,171.88-778,105.36

Finding the Fourth Proportional to 1,207,826.80, 1,667,171.88 and 778,105.36

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Solution

The fourth proportional to 1,207,826.80, 1,667,171.88 and 778,105.36 is: 1,074,024.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,207,826.80 : 1,667,171.88 = 778,105.36 : x
  2. Step 2: Convert to fraction form
    1,207,826.80/1,667,171.88 = 778,105.36/x
  3. Step 3: Cross multiply
    1,207,826.80x = 1,667,171.88 × 778,105.36
  4. Step 4: Simplify right side
    1,207,826.80x = 1,297,235,375,869.28
  5. Step 5: Solve for x
    x = 1,297,235,375,869.28/1,207,826.80
  6. Step 6: Final answer
    x = 1,074,024.34

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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.