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Finding the Fourth Proportional to 680,616.46, 939,234.13 and 374,690.38

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Solution

The fourth proportional to 680,616.46, 939,234.13 and 374,690.38 is: 517,063.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,616.46 : 939,234.13 = 374,690.38 : x
  2. Step 2: Convert to fraction form
    680,616.46/939,234.13 = 374,690.38/x
  3. Step 3: Cross multiply
    680,616.46x = 939,234.13 × 374,690.38
  4. Step 4: Simplify right side
    680,616.46x = 351,921,993,078.67
  5. Step 5: Solve for x
    x = 351,921,993,078.67/680,616.46
  6. Step 6: Final answer
    x = 517,063.59

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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.