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Finding the Fourth Proportional to 680,581.62, 939,195 and 374,651.46

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Solution

The fourth proportional to 680,581.62, 939,195 and 374,651.46 is: 517,014.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,581.62 : 939,195 = 374,651.46 : x
  2. Step 2: Convert to fraction form
    680,581.62/939,195 = 374,651.46/x
  3. Step 3: Cross multiply
    680,581.62x = 939,195 × 374,651.46
  4. Step 4: Simplify right side
    680,581.62x = 351,870,777,974.70
  5. Step 5: Solve for x
    x = 351,870,777,974.70/680,581.62
  6. Step 6: Final answer
    x = 517,014.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.