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Finding the Fourth Proportional to 680,287.24, 938,805 and 374,398.84

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Solution

The fourth proportional to 680,287.24, 938,805 and 374,398.84 is: 516,675.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,287.24 : 938,805 = 374,398.84 : x
  2. Step 2: Convert to fraction form
    680,287.24/938,805 = 374,398.84/x
  3. Step 3: Cross multiply
    680,287.24x = 938,805 × 374,398.84
  4. Step 4: Simplify right side
    680,287.24x = 351,487,502,986.20
  5. Step 5: Solve for x
    x = 351,487,502,986.20/680,287.24
  6. Step 6: Final answer
    x = 516,675.14

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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.