Home / 1,215,074.40-1,819,987.20-653,452.80

Finding the Fourth Proportional to 1,215,074.40, 1,819,987.20 and 653,452.80

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Solution

The fourth proportional to 1,215,074.40, 1,819,987.20 and 653,452.80 is: 978,767.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,074.40 : 1,819,987.20 = 653,452.80 : x
  2. Step 2: Convert to fraction form
    1,215,074.40/1,819,987.20 = 653,452.80/x
  3. Step 3: Cross multiply
    1,215,074.40x = 1,819,987.20 × 653,452.80
  4. Step 4: Simplify right side
    1,215,074.40x = 1,189,275,731,804.16
  5. Step 5: Solve for x
    x = 1,189,275,731,804.16/1,215,074.40
  6. Step 6: Final answer
    x = 978,767.83

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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.