Home / 1,222,763.74-1,687,466.66-678,899.55

Finding the Fourth Proportional to 1,222,763.74, 1,687,466.66 and 678,899.55

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Solution

The fourth proportional to 1,222,763.74, 1,687,466.66 and 678,899.55 is: 936,910.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,763.74 : 1,687,466.66 = 678,899.55 : x
  2. Step 2: Convert to fraction form
    1,222,763.74/1,687,466.66 = 678,899.55/x
  3. Step 3: Cross multiply
    1,222,763.74x = 1,687,466.66 × 678,899.55
  4. Step 4: Simplify right side
    1,222,763.74x = 1,145,620,352,719.51
  5. Step 5: Solve for x
    x = 1,145,620,352,719.51/1,222,763.74
  6. Step 6: Final answer
    x = 936,910.64

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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.