Home / 1,078,175.20-1,618,429.20-679,266.40

Finding the Fourth Proportional to 1,078,175.20, 1,618,429.20 and 679,266.40

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Solution

The fourth proportional to 1,078,175.20, 1,618,429.20 and 679,266.40 is: 1,019,634.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,078,175.20 : 1,618,429.20 = 679,266.40 : x
  2. Step 2: Convert to fraction form
    1,078,175.20/1,618,429.20 = 679,266.40/x
  3. Step 3: Cross multiply
    1,078,175.20x = 1,618,429.20 × 679,266.40
  4. Step 4: Simplify right side
    1,078,175.20x = 1,099,344,576,338.88
  5. Step 5: Solve for x
    x = 1,099,344,576,338.88/1,078,175.20
  6. Step 6: Final answer
    x = 1,019,634.45

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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.