Home / 853,101.14-1,280,438.91-432,672.26

Finding the Fourth Proportional to 853,101.14, 1,280,438.91 and 432,672.26

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Solution

The fourth proportional to 853,101.14, 1,280,438.91 and 432,672.26 is: 649,407.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,101.14 : 1,280,438.91 = 432,672.26 : x
  2. Step 2: Convert to fraction form
    853,101.14/1,280,438.91 = 432,672.26/x
  3. Step 3: Cross multiply
    853,101.14x = 1,280,438.91 × 432,672.26
  4. Step 4: Simplify right side
    853,101.14x = 554,010,396,981.64
  5. Step 5: Solve for x
    x = 554,010,396,981.64/853,101.14
  6. Step 6: Final answer
    x = 649,407.64

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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.