Home / 1,121,663.70-1,682,495.55-672,891.30

Finding the Fourth Proportional to 1,121,663.70, 1,682,495.55 and 672,891.30

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Solution

The fourth proportional to 1,121,663.70, 1,682,495.55 and 672,891.30 is: 1,009,336.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,663.70 : 1,682,495.55 = 672,891.30 : x
  2. Step 2: Convert to fraction form
    1,121,663.70/1,682,495.55 = 672,891.30/x
  3. Step 3: Cross multiply
    1,121,663.70x = 1,682,495.55 × 672,891.30
  4. Step 4: Simplify right side
    1,121,663.70x = 1,132,136,617,883.72
  5. Step 5: Solve for x
    x = 1,132,136,617,883.72/1,121,663.70
  6. Step 6: Final answer
    x = 1,009,336.95

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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.