Home / 1,440,921.72-1,988,662.05-1,393,604.15

Finding the Fourth Proportional to 1,440,921.72, 1,988,662.05 and 1,393,604.15

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Solution

The fourth proportional to 1,440,921.72, 1,988,662.05 and 1,393,604.15 is: 1,923,357.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,440,921.72 : 1,988,662.05 = 1,393,604.15 : x
  2. Step 2: Convert to fraction form
    1,440,921.72/1,988,662.05 = 1,393,604.15/x
  3. Step 3: Cross multiply
    1,440,921.72x = 1,988,662.05 × 1,393,604.15
  4. Step 4: Simplify right side
    1,440,921.72x = 2,771,407,675,884.20
  5. Step 5: Solve for x
    x = 2,771,407,675,884.20/1,440,921.72
  6. Step 6: Final answer
    x = 1,923,357.55

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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.