Home / 1,222,288.84-1,686,733.20-678,392.74

Finding the Fourth Proportional to 1,222,288.84, 1,686,733.20 and 678,392.74

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Solution

The fourth proportional to 1,222,288.84, 1,686,733.20 and 678,392.74 is: 936,167.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,288.84 : 1,686,733.20 = 678,392.74 : x
  2. Step 2: Convert to fraction form
    1,222,288.84/1,686,733.20 = 678,392.74/x
  3. Step 3: Cross multiply
    1,222,288.84x = 1,686,733.20 × 678,392.74
  4. Step 4: Simplify right side
    1,222,288.84x = 1,144,267,557,196.97
  5. Step 5: Solve for x
    x = 1,144,267,557,196.97/1,222,288.84
  6. Step 6: Final answer
    x = 936,167.88

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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.