Home / 820,716.39-1,132,115.40-493,802.82

Finding the Fourth Proportional to 820,716.39, 1,132,115.40 and 493,802.82

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Solution

The fourth proportional to 820,716.39, 1,132,115.40 and 493,802.82 is: 681,163.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,716.39 : 1,132,115.40 = 493,802.82 : x
  2. Step 2: Convert to fraction form
    820,716.39/1,132,115.40 = 493,802.82/x
  3. Step 3: Cross multiply
    820,716.39x = 1,132,115.40 × 493,802.82
  4. Step 4: Simplify right side
    820,716.39x = 559,041,777,085.43
  5. Step 5: Solve for x
    x = 559,041,777,085.43/820,716.39
  6. Step 6: Final answer
    x = 681,163.17

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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.