Home / 1,220,205.92-1,683,881.24-668,920.64

Finding the Fourth Proportional to 1,220,205.92, 1,683,881.24 and 668,920.64

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Solution

The fourth proportional to 1,220,205.92, 1,683,881.24 and 668,920.64 is: 923,108.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220,205.92 : 1,683,881.24 = 668,920.64 : x
  2. Step 2: Convert to fraction form
    1,220,205.92/1,683,881.24 = 668,920.64/x
  3. Step 3: Cross multiply
    1,220,205.92x = 1,683,881.24 × 668,920.64
  4. Step 4: Simplify right side
    1,220,205.92x = 1,126,382,906,653.09
  5. Step 5: Solve for x
    x = 1,126,382,906,653.09/1,220,205.92
  6. Step 6: Final answer
    x = 923,108.87

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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.