Home / 1,222,764.17-1,687,467.29-678,899.97

Finding the Fourth Proportional to 1,222,764.17, 1,687,467.29 and 678,899.97

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Solution

The fourth proportional to 1,222,764.17, 1,687,467.29 and 678,899.97 is: 936,911.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,764.17 : 1,687,467.29 = 678,899.97 : x
  2. Step 2: Convert to fraction form
    1,222,764.17/1,687,467.29 = 678,899.97/x
  3. Step 3: Cross multiply
    1,222,764.17x = 1,687,467.29 × 678,899.97
  4. Step 4: Simplify right side
    1,222,764.17x = 1,145,621,489,162.48
  5. Step 5: Solve for x
    x = 1,145,621,489,162.48/1,222,764.17
  6. Step 6: Final answer
    x = 936,911.24

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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.