Home / 826,669.89-1,240,280.94-321,247.35

Finding the Fourth Proportional to 826,669.89, 1,240,280.94 and 321,247.35

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Solution

The fourth proportional to 826,669.89, 1,240,280.94 and 321,247.35 is: 481,978.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,669.89 : 1,240,280.94 = 321,247.35 : x
  2. Step 2: Convert to fraction form
    826,669.89/1,240,280.94 = 321,247.35/x
  3. Step 3: Cross multiply
    826,669.89x = 1,240,280.94 × 321,247.35
  4. Step 4: Simplify right side
    826,669.89x = 398,436,965,230.51
  5. Step 5: Solve for x
    x = 398,436,965,230.51/826,669.89
  6. Step 6: Final answer
    x = 481,978.32

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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.