Home / 1,440,908.72-1,988,644.11-1,393,591.15

Finding the Fourth Proportional to 1,440,908.72, 1,988,644.11 and 1,393,591.15

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Solution

The fourth proportional to 1,440,908.72, 1,988,644.11 and 1,393,591.15 is: 1,923,339.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,440,908.72 : 1,988,644.11 = 1,393,591.15 : x
  2. Step 2: Convert to fraction form
    1,440,908.72/1,988,644.11 = 1,393,591.15/x
  3. Step 3: Cross multiply
    1,440,908.72x = 1,988,644.11 × 1,393,591.15
  4. Step 4: Simplify right side
    1,440,908.72x = 2,771,356,822,252.41
  5. Step 5: Solve for x
    x = 2,771,356,822,252.41/1,440,908.72
  6. Step 6: Final answer
    x = 1,923,339.62

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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.