Home / 680,738.58-1,020,581.89-343,605.70

Finding the Fourth Proportional to 680,738.58, 1,020,581.89 and 343,605.70

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Solution

The fourth proportional to 680,738.58, 1,020,581.89 and 343,605.70 is: 515,143.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,738.58 : 1,020,581.89 = 343,605.70 : x
  2. Step 2: Convert to fraction form
    680,738.58/1,020,581.89 = 343,605.70/x
  3. Step 3: Cross multiply
    680,738.58x = 1,020,581.89 × 343,605.70
  4. Step 4: Simplify right side
    680,738.58x = 350,677,754,720.77
  5. Step 5: Solve for x
    x = 350,677,754,720.77/680,738.58
  6. Step 6: Final answer
    x = 515,143.06

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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.