Home / 989,540.91-1,484,408.57-279,574.47

Finding the Fourth Proportional to 989,540.91, 1,484,408.57 and 279,574.47

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Solution

The fourth proportional to 989,540.91, 1,484,408.57 and 279,574.47 is: 419,389.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,540.91 : 1,484,408.57 = 279,574.47 : x
  2. Step 2: Convert to fraction form
    989,540.91/1,484,408.57 = 279,574.47/x
  3. Step 3: Cross multiply
    989,540.91x = 1,484,408.57 × 279,574.47
  4. Step 4: Simplify right side
    989,540.91x = 415,002,737,823.34
  5. Step 5: Solve for x
    x = 415,002,737,823.34/989,540.91
  6. Step 6: Final answer
    x = 419,389.17

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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.