Home / 820,634.48-1,231,489.94-288,141.80

Finding the Fourth Proportional to 820,634.48, 1,231,489.94 and 288,141.80

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Solution

The fourth proportional to 820,634.48, 1,231,489.94 and 288,141.80 is: 432,401.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,634.48 : 1,231,489.94 = 288,141.80 : x
  2. Step 2: Convert to fraction form
    820,634.48/1,231,489.94 = 288,141.80/x
  3. Step 3: Cross multiply
    820,634.48x = 1,231,489.94 × 288,141.80
  4. Step 4: Simplify right side
    820,634.48x = 354,843,727,993.49
  5. Step 5: Solve for x
    x = 354,843,727,993.49/820,634.48
  6. Step 6: Final answer
    x = 432,401.68

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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.