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Finding the Fourth Proportional to 680,814.38, 939,486.62 and 374,832.65

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Solution

The fourth proportional to 680,814.38, 939,486.62 and 374,832.65 is: 517,248.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,814.38 : 939,486.62 = 374,832.65 : x
  2. Step 2: Convert to fraction form
    680,814.38/939,486.62 = 374,832.65/x
  3. Step 3: Cross multiply
    680,814.38x = 939,486.62 × 374,832.65
  4. Step 4: Simplify right side
    680,814.38x = 352,150,255,306.90
  5. Step 5: Solve for x
    x = 352,150,255,306.90/680,814.38
  6. Step 6: Final answer
    x = 517,248.55

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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.