Home / 686,383.70-1,028,963.18-349,235.78

Finding the Fourth Proportional to 686,383.70, 1,028,963.18 and 349,235.78

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Solution

The fourth proportional to 686,383.70, 1,028,963.18 and 349,235.78 is: 523,542.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,383.70 : 1,028,963.18 = 349,235.78 : x
  2. Step 2: Convert to fraction form
    686,383.70/1,028,963.18 = 349,235.78/x
  3. Step 3: Cross multiply
    686,383.70x = 1,028,963.18 × 349,235.78
  4. Step 4: Simplify right side
    686,383.70x = 359,350,758,758.58
  5. Step 5: Solve for x
    x = 359,350,758,758.58/686,383.70
  6. Step 6: Final answer
    x = 523,542.09

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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.