Home / 826,379.47-1,240,233.54-427,137.22

Finding the Fourth Proportional to 826,379.47, 1,240,233.54 and 427,137.22

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Solution

The fourth proportional to 826,379.47, 1,240,233.54 and 427,137.22 is: 641,049.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,379.47 : 1,240,233.54 = 427,137.22 : x
  2. Step 2: Convert to fraction form
    826,379.47/1,240,233.54 = 427,137.22/x
  3. Step 3: Cross multiply
    826,379.47x = 1,240,233.54 × 427,137.22
  4. Step 4: Simplify right side
    826,379.47x = 529,749,906,426.36
  5. Step 5: Solve for x
    x = 529,749,906,426.36/826,379.47
  6. Step 6: Final answer
    x = 641,049.21

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1.5x scale

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.