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Finding the Fourth Proportional to 635,734.67, 876,806.44 and 418,166.78

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Solution

The fourth proportional to 635,734.67, 876,806.44 and 418,166.78 is: 576,736.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,734.67 : 876,806.44 = 418,166.78 : x
  2. Step 2: Convert to fraction form
    635,734.67/876,806.44 = 418,166.78/x
  3. Step 3: Cross multiply
    635,734.67x = 876,806.44 × 418,166.78
  4. Step 4: Simplify right side
    635,734.67x = 366,651,320,268.61
  5. Step 5: Solve for x
    x = 366,651,320,268.61/635,734.67
  6. Step 6: Final answer
    x = 576,736.40

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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.