Home / 989,772.90-1,484,513.55-279,872.70

Finding the Fourth Proportional to 989,772.90, 1,484,513.55 and 279,872.70

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Solution

The fourth proportional to 989,772.90, 1,484,513.55 and 279,872.70 is: 419,767.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,772.90 : 1,484,513.55 = 279,872.70 : x
  2. Step 2: Convert to fraction form
    989,772.90/1,484,513.55 = 279,872.70/x
  3. Step 3: Cross multiply
    989,772.90x = 1,484,513.55 × 279,872.70
  4. Step 4: Simplify right side
    989,772.90x = 415,474,815,425.09
  5. Step 5: Solve for x
    x = 415,474,815,425.09/989,772.90
  6. Step 6: Final answer
    x = 419,767.82

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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.