Home / 1,108,832.05-1,530,179.31-643,729.08

Finding the Fourth Proportional to 1,108,832.05, 1,530,179.31 and 643,729.08

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Solution

The fourth proportional to 1,108,832.05, 1,530,179.31 and 643,729.08 is: 888,340.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,108,832.05 : 1,530,179.31 = 643,729.08 : x
  2. Step 2: Convert to fraction form
    1,108,832.05/1,530,179.31 = 643,729.08/x
  3. Step 3: Cross multiply
    1,108,832.05x = 1,530,179.31 × 643,729.08
  4. Step 4: Simplify right side
    1,108,832.05x = 985,020,908,591.79
  5. Step 5: Solve for x
    x = 985,020,908,591.79/1,108,832.05
  6. Step 6: Final answer
    x = 888,340.95

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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.