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Finding the Fourth Proportional to 636,670, 878,729.41 and 364,920.06

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Solution

The fourth proportional to 636,670, 878,729.41 and 364,920.06 is: 503,661.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,670 : 878,729.41 = 364,920.06 : x
  2. Step 2: Convert to fraction form
    636,670/878,729.41 = 364,920.06/x
  3. Step 3: Cross multiply
    636,670x = 878,729.41 × 364,920.06
  4. Step 4: Simplify right side
    636,670x = 320,665,989,020.97
  5. Step 5: Solve for x
    x = 320,665,989,020.97/636,670
  6. Step 6: Final answer
    x = 503,661.22

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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.