Home / 657,121.78-985,804.17-207,955.72

Finding the Fourth Proportional to 657,121.78, 985,804.17 and 207,955.72

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Solution

The fourth proportional to 657,121.78, 985,804.17 and 207,955.72 is: 311,972.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,121.78 : 985,804.17 = 207,955.72 : x
  2. Step 2: Convert to fraction form
    657,121.78/985,804.17 = 207,955.72/x
  3. Step 3: Cross multiply
    657,121.78x = 985,804.17 × 207,955.72
  4. Step 4: Simplify right side
    657,121.78x = 205,003,615,951.35
  5. Step 5: Solve for x
    x = 205,003,615,951.35/657,121.78
  6. Step 6: Final answer
    x = 311,972.03

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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.