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Finding the Fourth Proportional to 680,616.96, 939,234.82 and 374,690.88

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Solution

The fourth proportional to 680,616.96, 939,234.82 and 374,690.88 is: 517,064.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,616.96 : 939,234.82 = 374,690.88 : x
  2. Step 2: Convert to fraction form
    680,616.96/939,234.82 = 374,690.88/x
  3. Step 3: Cross multiply
    680,616.96x = 939,234.82 × 374,690.88
  4. Step 4: Simplify right side
    680,616.96x = 351,922,721,232.44
  5. Step 5: Solve for x
    x = 351,922,721,232.44/680,616.96
  6. Step 6: Final answer
    x = 517,064.28

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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.