Home / 1,027,555-1,541,775.40-428,634.12

Finding the Fourth Proportional to 1,027,555, 1,541,775.40 and 428,634.12

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Solution

The fourth proportional to 1,027,555, 1,541,775.40 and 428,634.12 is: 643,135.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,027,555 : 1,541,775.40 = 428,634.12 : x
  2. Step 2: Convert to fraction form
    1,027,555/1,541,775.40 = 428,634.12/x
  3. Step 3: Cross multiply
    1,027,555x = 1,541,775.40 × 428,634.12
  4. Step 4: Simplify right side
    1,027,555x = 660,857,541,816.65
  5. Step 5: Solve for x
    x = 660,857,541,816.65/1,027,555
  6. Step 6: Final answer
    x = 643,135.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.