Home / 1,222,253.88-1,686,697.65-678,394.41

Finding the Fourth Proportional to 1,222,253.88, 1,686,697.65 and 678,394.41

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Solution

The fourth proportional to 1,222,253.88, 1,686,697.65 and 678,394.41 is: 936,177.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,253.88 : 1,686,697.65 = 678,394.41 : x
  2. Step 2: Convert to fraction form
    1,222,253.88/1,686,697.65 = 678,394.41/x
  3. Step 3: Cross multiply
    1,222,253.88x = 1,686,697.65 × 678,394.41
  4. Step 4: Simplify right side
    1,222,253.88x = 1,144,246,257,120.14
  5. Step 5: Solve for x
    x = 1,144,246,257,120.14/1,222,253.88
  6. Step 6: Final answer
    x = 936,177.23

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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.