Home / 1,222,723.04-1,687,279.73-678,858.69

Finding the Fourth Proportional to 1,222,723.04, 1,687,279.73 and 678,858.69

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Solution

The fourth proportional to 1,222,723.04, 1,687,279.73 and 678,858.69 is: 936,781.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,723.04 : 1,687,279.73 = 678,858.69 : x
  2. Step 2: Convert to fraction form
    1,222,723.04/1,687,279.73 = 678,858.69/x
  3. Step 3: Cross multiply
    1,222,723.04x = 1,687,279.73 × 678,858.69
  4. Step 4: Simplify right side
    1,222,723.04x = 1,145,424,508,868.50
  5. Step 5: Solve for x
    x = 1,145,424,508,868.50/1,222,723.04
  6. Step 6: Final answer
    x = 936,781.66

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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.