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Finding the Fourth Proportional to 680,772.84, 939,458.52 and 374,842.80

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Solution

The fourth proportional to 680,772.84, 939,458.52 and 374,842.80 is: 517,278.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,772.84 : 939,458.52 = 374,842.80 : x
  2. Step 2: Convert to fraction form
    680,772.84/939,458.52 = 374,842.80/x
  3. Step 3: Cross multiply
    680,772.84x = 939,458.52 × 374,842.80
  4. Step 4: Simplify right side
    680,772.84x = 352,149,262,120.66
  5. Step 5: Solve for x
    x = 352,149,262,120.66/680,772.84
  6. Step 6: Final answer
    x = 517,278.66

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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.