Home / 1,391,118.88-2,086,779.77-431,452.65

Finding the Fourth Proportional to 1,391,118.88, 2,086,779.77 and 431,452.65

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Solution

The fourth proportional to 1,391,118.88, 2,086,779.77 and 431,452.65 is: 647,210.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,118.88 : 2,086,779.77 = 431,452.65 : x
  2. Step 2: Convert to fraction form
    1,391,118.88/2,086,779.77 = 431,452.65/x
  3. Step 3: Cross multiply
    1,391,118.88x = 2,086,779.77 × 431,452.65
  4. Step 4: Simplify right side
    1,391,118.88x = 900,346,653,368.15
  5. Step 5: Solve for x
    x = 900,346,653,368.15/1,391,118.88
  6. Step 6: Final answer
    x = 647,210.43

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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.