Home / 1,221,223.42-1,832,001.72-422,290.45

Finding the Fourth Proportional to 1,221,223.42, 1,832,001.72 and 422,290.45

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Solution

The fourth proportional to 1,221,223.42, 1,832,001.72 and 422,290.45 is: 633,493.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,223.42 : 1,832,001.72 = 422,290.45 : x
  2. Step 2: Convert to fraction form
    1,221,223.42/1,832,001.72 = 422,290.45/x
  3. Step 3: Cross multiply
    1,221,223.42x = 1,832,001.72 × 422,290.45
  4. Step 4: Simplify right side
    1,221,223.42x = 773,636,830,739.57
  5. Step 5: Solve for x
    x = 773,636,830,739.57/1,221,223.42
  6. Step 6: Final answer
    x = 633,493.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.