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Finding the Fourth Proportional to 680,200.84, 938,636.22 and 374,266

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Solution

The fourth proportional to 680,200.84, 938,636.22 and 374,266 is: 516,464.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,200.84 : 938,636.22 = 374,266 : x
  2. Step 2: Convert to fraction form
    680,200.84/938,636.22 = 374,266/x
  3. Step 3: Cross multiply
    680,200.84x = 938,636.22 × 374,266
  4. Step 4: Simplify right side
    680,200.84x = 351,299,623,514.52
  5. Step 5: Solve for x
    x = 351,299,623,514.52/680,200.84
  6. Step 6: Final answer
    x = 516,464.55

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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.