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Finding the Fourth Proportional to 650,716.78, 976,243.44 and 381,072.64

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Solution

The fourth proportional to 650,716.78, 976,243.44 and 381,072.64 is: 571,707.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    650,716.78 : 976,243.44 = 381,072.64 : x
  2. Step 2: Convert to fraction form
    650,716.78/976,243.44 = 381,072.64/x
  3. Step 3: Cross multiply
    650,716.78x = 976,243.44 × 381,072.64
  4. Step 4: Simplify right side
    650,716.78x = 372,019,664,963.48
  5. Step 5: Solve for x
    x = 372,019,664,963.48/650,716.78
  6. Step 6: Final answer
    x = 571,707.50

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1.5x scale

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.