Home / 1,224,121.80-1,689,281.64-672,850.20

Finding the Fourth Proportional to 1,224,121.80, 1,689,281.64 and 672,850.20

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Solution

The fourth proportional to 1,224,121.80, 1,689,281.64 and 672,850.20 is: 928,529.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,224,121.80 : 1,689,281.64 = 672,850.20 : x
  2. Step 2: Convert to fraction form
    1,224,121.80/1,689,281.64 = 672,850.20/x
  3. Step 3: Cross multiply
    1,224,121.80x = 1,689,281.64 × 672,850.20
  4. Step 4: Simplify right side
    1,224,121.80x = 1,136,633,489,330.33
  5. Step 5: Solve for x
    x = 1,136,633,489,330.33/1,224,121.80
  6. Step 6: Final answer
    x = 928,529.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.