Home / 861,319.50-1,291,990.77-270,343.50

Finding the Fourth Proportional to 861,319.50, 1,291,990.77 and 270,343.50

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Solution

The fourth proportional to 861,319.50, 1,291,990.77 and 270,343.50 is: 405,518.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,319.50 : 1,291,990.77 = 270,343.50 : x
  2. Step 2: Convert to fraction form
    861,319.50/1,291,990.77 = 270,343.50/x
  3. Step 3: Cross multiply
    861,319.50x = 1,291,990.77 × 270,343.50
  4. Step 4: Simplify right side
    861,319.50x = 349,281,306,729.50
  5. Step 5: Solve for x
    x = 349,281,306,729.50/861,319.50
  6. Step 6: Final answer
    x = 405,518.87

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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.