Home / 820,680.18-1,132,727.58-481,257.78

Finding the Fourth Proportional to 820,680.18, 1,132,727.58 and 481,257.78

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Solution

The fourth proportional to 820,680.18, 1,132,727.58 and 481,257.78 is: 664,246.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,680.18 : 1,132,727.58 = 481,257.78 : x
  2. Step 2: Convert to fraction form
    820,680.18/1,132,727.58 = 481,257.78/x
  3. Step 3: Cross multiply
    820,680.18x = 1,132,727.58 × 481,257.78
  4. Step 4: Simplify right side
    820,680.18x = 545,133,960,495.57
  5. Step 5: Solve for x
    x = 545,133,960,495.57/820,680.18
  6. Step 6: Final answer
    x = 664,246.53

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1.5x scale

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.