Home / 786,728.75-1,085,857.61-500,192.87

Finding the Fourth Proportional to 786,728.75, 1,085,857.61 and 500,192.87

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Solution

The fourth proportional to 786,728.75, 1,085,857.61 and 500,192.87 is: 690,375.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,728.75 : 1,085,857.61 = 500,192.87 : x
  2. Step 2: Convert to fraction form
    786,728.75/1,085,857.61 = 500,192.87/x
  3. Step 3: Cross multiply
    786,728.75x = 1,085,857.61 × 500,192.87
  4. Step 4: Simplify right side
    786,728.75x = 543,138,226,426.99
  5. Step 5: Solve for x
    x = 543,138,226,426.99/786,728.75
  6. Step 6: Final answer
    x = 690,375.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.