Home / 1,221,223.40-1,685,369.94-677,531.96

Finding the Fourth Proportional to 1,221,223.40, 1,685,369.94 and 677,531.96

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Solution

The fourth proportional to 1,221,223.40, 1,685,369.94 and 677,531.96 is: 935,039.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,223.40 : 1,685,369.94 = 677,531.96 : x
  2. Step 2: Convert to fraction form
    1,221,223.40/1,685,369.94 = 677,531.96/x
  3. Step 3: Cross multiply
    1,221,223.40x = 1,685,369.94 × 677,531.96
  4. Step 4: Simplify right side
    1,221,223.40x = 1,141,891,998,773.28
  5. Step 5: Solve for x
    x = 1,141,891,998,773.28/1,221,223.40
  6. Step 6: Final answer
    x = 935,039.40

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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.