Home / 1,987,486.40-2,981,229.60-992,158.40

Finding the Fourth Proportional to 1,987,486.40, 2,981,229.60 and 992,158.40

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Solution

The fourth proportional to 1,987,486.40, 2,981,229.60 and 992,158.40 is: 1,488,237.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,987,486.40 : 2,981,229.60 = 992,158.40 : x
  2. Step 2: Convert to fraction form
    1,987,486.40/2,981,229.60 = 992,158.40/x
  3. Step 3: Cross multiply
    1,987,486.40x = 2,981,229.60 × 992,158.40
  4. Step 4: Simplify right side
    1,987,486.40x = 2,957,851,989,968.64
  5. Step 5: Solve for x
    x = 2,957,851,989,968.64/1,987,486.40
  6. Step 6: Final answer
    x = 1,488,237.60

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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.