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Finding the Fourth Proportional to 681,751.84, 940,849.68 and 379,948

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Solution

The fourth proportional to 681,751.84, 940,849.68 and 379,948 is: 524,346.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,751.84 : 940,849.68 = 379,948 : x
  2. Step 2: Convert to fraction form
    681,751.84/940,849.68 = 379,948/x
  3. Step 3: Cross multiply
    681,751.84x = 940,849.68 × 379,948
  4. Step 4: Simplify right side
    681,751.84x = 357,473,954,216.64
  5. Step 5: Solve for x
    x = 357,473,954,216.64/681,751.84
  6. Step 6: Final answer
    x = 524,346.15

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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.