Home / 656,715.29-985,128.83-207,315.95

Finding the Fourth Proportional to 656,715.29, 985,128.83 and 207,315.95

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Solution

The fourth proportional to 656,715.29, 985,128.83 and 207,315.95 is: 310,991.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,715.29 : 985,128.83 = 207,315.95 : x
  2. Step 2: Convert to fraction form
    656,715.29/985,128.83 = 207,315.95/x
  3. Step 3: Cross multiply
    656,715.29x = 985,128.83 × 207,315.95
  4. Step 4: Simplify right side
    656,715.29x = 204,232,918,227.26
  5. Step 5: Solve for x
    x = 204,232,918,227.26/656,715.29
  6. Step 6: Final answer
    x = 310,991.57

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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.