Home / 1,208,997.27-1,668,416.22-665,121.38

Finding the Fourth Proportional to 1,208,997.27, 1,668,416.22 and 665,121.38

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Solution

The fourth proportional to 1,208,997.27, 1,668,416.22 and 665,121.38 is: 917,867.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,208,997.27 : 1,668,416.22 = 665,121.38 : x
  2. Step 2: Convert to fraction form
    1,208,997.27/1,668,416.22 = 665,121.38/x
  3. Step 3: Cross multiply
    1,208,997.27x = 1,668,416.22 × 665,121.38
  4. Step 4: Simplify right side
    1,208,997.27x = 1,109,699,290,318.70
  5. Step 5: Solve for x
    x = 1,109,699,290,318.70/1,208,997.27
  6. Step 6: Final answer
    x = 917,867.49

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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.