Home / 679,442.84-1,019,286.84-279,865.52

Finding the Fourth Proportional to 679,442.84, 1,019,286.84 and 279,865.52

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Solution

The fourth proportional to 679,442.84, 1,019,286.84 and 279,865.52 is: 419,848.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,442.84 : 1,019,286.84 = 279,865.52 : x
  2. Step 2: Convert to fraction form
    679,442.84/1,019,286.84 = 279,865.52/x
  3. Step 3: Cross multiply
    679,442.84x = 1,019,286.84 × 279,865.52
  4. Step 4: Simplify right side
    679,442.84x = 285,263,241,505.76
  5. Step 5: Solve for x
    x = 285,263,241,505.76/679,442.84
  6. Step 6: Final answer
    x = 419,848.77

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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.