Home / 657,120.78-985,802.67-207,954.72

Finding the Fourth Proportional to 657,120.78, 985,802.67 and 207,954.72

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Solution

The fourth proportional to 657,120.78, 985,802.67 and 207,954.72 is: 311,970.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,120.78 : 985,802.67 = 207,954.72 : x
  2. Step 2: Convert to fraction form
    657,120.78/985,802.67 = 207,954.72/x
  3. Step 3: Cross multiply
    657,120.78x = 985,802.67 × 207,954.72
  4. Step 4: Simplify right side
    657,120.78x = 205,002,318,215.10
  5. Step 5: Solve for x
    x = 205,002,318,215.10/657,120.78
  6. Step 6: Final answer
    x = 311,970.53

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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.