Home / 825,475.82-1,139,138.87-462,891.72

Finding the Fourth Proportional to 825,475.82, 1,139,138.87 and 462,891.72

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Solution

The fourth proportional to 825,475.82, 1,139,138.87 and 462,891.72 is: 638,780.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,475.82 : 1,139,138.87 = 462,891.72 : x
  2. Step 2: Convert to fraction form
    825,475.82/1,139,138.87 = 462,891.72/x
  3. Step 3: Cross multiply
    825,475.82x = 1,139,138.87 × 462,891.72
  4. Step 4: Simplify right side
    825,475.82x = 527,297,948,538.70
  5. Step 5: Solve for x
    x = 527,297,948,538.70/825,475.82
  6. Step 6: Final answer
    x = 638,780.61

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1.5x scale

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.