Home / 679,455.84-1,019,306.34-279,878.52

Finding the Fourth Proportional to 679,455.84, 1,019,306.34 and 279,878.52

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Solution

The fourth proportional to 679,455.84, 1,019,306.34 and 279,878.52 is: 419,868.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,455.84 : 1,019,306.34 = 279,878.52 : x
  2. Step 2: Convert to fraction form
    679,455.84/1,019,306.34 = 279,878.52/x
  3. Step 3: Cross multiply
    679,455.84x = 1,019,306.34 × 279,878.52
  4. Step 4: Simplify right side
    679,455.84x = 285,281,949,865.82
  5. Step 5: Solve for x
    x = 285,281,949,865.82/679,455.84
  6. Step 6: Final answer
    x = 419,868.27

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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.