Home / 657,123.78-985,807.18-207,957.72

Finding the Fourth Proportional to 657,123.78, 985,807.18 and 207,957.72

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Solution

The fourth proportional to 657,123.78, 985,807.18 and 207,957.72 is: 311,975.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,123.78 : 985,807.18 = 207,957.72 : x
  2. Step 2: Convert to fraction form
    657,123.78/985,807.18 = 207,957.72/x
  3. Step 3: Cross multiply
    657,123.78x = 985,807.18 × 207,957.72
  4. Step 4: Simplify right side
    657,123.78x = 205,006,213,512.43
  5. Step 5: Solve for x
    x = 205,006,213,512.43/657,123.78
  6. Step 6: Final answer
    x = 311,975.03

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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.