Home / 679,868.23-1,019,918.52-280,290.57

Finding the Fourth Proportional to 679,868.23, 1,019,918.52 and 280,290.57

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Solution

The fourth proportional to 679,868.23, 1,019,918.52 and 280,290.57 is: 420,483.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,868.23 : 1,019,918.52 = 280,290.57 : x
  2. Step 2: Convert to fraction form
    679,868.23/1,019,918.52 = 280,290.57/x
  3. Step 3: Cross multiply
    679,868.23x = 1,019,918.52 × 280,290.57
  4. Step 4: Simplify right side
    679,868.23x = 285,873,543,324.36
  5. Step 5: Solve for x
    x = 285,873,543,324.36/679,868.23
  6. Step 6: Final answer
    x = 420,483.75

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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.