Home / 780,266.90-1,170,167.07-406,085.78

Finding the Fourth Proportional to 780,266.90, 1,170,167.07 and 406,085.78

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Solution

The fourth proportional to 780,266.90, 1,170,167.07 and 406,085.78 is: 609,007.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,266.90 : 1,170,167.07 = 406,085.78 : x
  2. Step 2: Convert to fraction form
    780,266.90/1,170,167.07 = 406,085.78/x
  3. Step 3: Cross multiply
    780,266.90x = 1,170,167.07 × 406,085.78
  4. Step 4: Simplify right side
    780,266.90x = 475,188,207,351.27
  5. Step 5: Solve for x
    x = 475,188,207,351.27/780,266.90
  6. Step 6: Final answer
    x = 609,007.26

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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.