Home / 2,087,345.20-3,131,017.80-667,447.60

Finding the Fourth Proportional to 2,087,345.20, 3,131,017.80 and 667,447.60

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Solution

The fourth proportional to 2,087,345.20, 3,131,017.80 and 667,447.60 is: 1,001,171.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,087,345.20 : 3,131,017.80 = 667,447.60 : x
  2. Step 2: Convert to fraction form
    2,087,345.20/3,131,017.80 = 667,447.60/x
  3. Step 3: Cross multiply
    2,087,345.20x = 3,131,017.80 × 667,447.60
  4. Step 4: Simplify right side
    2,087,345.20x = 2,089,790,316,167.28
  5. Step 5: Solve for x
    x = 2,089,790,316,167.28/2,087,345.20
  6. Step 6: Final answer
    x = 1,001,171.40

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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.