Home / 680,338.49-1,021,138.30-343,615.61

Finding the Fourth Proportional to 680,338.49, 1,021,138.30 and 343,615.61

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Solution

The fourth proportional to 680,338.49, 1,021,138.30 and 343,615.61 is: 515,741.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,338.49 : 1,021,138.30 = 343,615.61 : x
  2. Step 2: Convert to fraction form
    680,338.49/1,021,138.30 = 343,615.61/x
  3. Step 3: Cross multiply
    680,338.49x = 1,021,138.30 × 343,615.61
  4. Step 4: Simplify right side
    680,338.49x = 350,879,054,743.17
  5. Step 5: Solve for x
    x = 350,879,054,743.17/680,338.49
  6. Step 6: Final answer
    x = 515,741.88

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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.