Home / 3,988,420.80-5,981,464.80-1,429,339.20

Finding the Fourth Proportional to 3,988,420.80, 5,981,464.80 and 1,429,339.20

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Solution

The fourth proportional to 3,988,420.80, 5,981,464.80 and 1,429,339.20 is: 2,143,590.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,988,420.80 : 5,981,464.80 = 1,429,339.20 : x
  2. Step 2: Convert to fraction form
    3,988,420.80/5,981,464.80 = 1,429,339.20/x
  3. Step 3: Cross multiply
    3,988,420.80x = 5,981,464.80 × 1,429,339.20
  4. Step 4: Simplify right side
    3,988,420.80x = 8,549,542,112,060.16
  5. Step 5: Solve for x
    x = 8,549,542,112,060.16/3,988,420.80
  6. Step 6: Final answer
    x = 2,143,590.79

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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.