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Finding the Fourth Proportional to 447,799.79, 671,788.28 and 127,954.55

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Solution

The fourth proportional to 447,799.79, 671,788.28 and 127,954.55 is: 191,957.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,799.79 : 671,788.28 = 127,954.55 : x
  2. Step 2: Convert to fraction form
    447,799.79/671,788.28 = 127,954.55/x
  3. Step 3: Cross multiply
    447,799.79x = 671,788.28 × 127,954.55
  4. Step 4: Simplify right side
    447,799.79x = 85,958,369,062.03
  5. Step 5: Solve for x
    x = 85,958,369,062.03/447,799.79
  6. Step 6: Final answer
    x = 191,957.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.