Home / 1,222,122.44-1,686,731.64-712,824.78

Finding the Fourth Proportional to 1,222,122.44, 1,686,731.64 and 712,824.78

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Solution

The fourth proportional to 1,222,122.44, 1,686,731.64 and 712,824.78 is: 983,816.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,122.44 : 1,686,731.64 = 712,824.78 : x
  2. Step 2: Convert to fraction form
    1,222,122.44/1,686,731.64 = 712,824.78/x
  3. Step 3: Cross multiply
    1,222,122.44x = 1,686,731.64 × 712,824.78
  4. Step 4: Simplify right side
    1,222,122.44x = 1,202,344,110,202.04
  5. Step 5: Solve for x
    x = 1,202,344,110,202.04/1,222,122.44
  6. Step 6: Final answer
    x = 983,816.41

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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.