Home / 820,936.49-1,231,446.23-315,320.18

Finding the Fourth Proportional to 820,936.49, 1,231,446.23 and 315,320.18

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Solution

The fourth proportional to 820,936.49, 1,231,446.23 and 315,320.18 is: 472,996.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,936.49 : 1,231,446.23 = 315,320.18 : x
  2. Step 2: Convert to fraction form
    820,936.49/1,231,446.23 = 315,320.18/x
  3. Step 3: Cross multiply
    820,936.49x = 1,231,446.23 × 315,320.18
  4. Step 4: Simplify right side
    820,936.49x = 388,299,839,170.09
  5. Step 5: Solve for x
    x = 388,299,839,170.09/820,936.49
  6. Step 6: Final answer
    x = 472,996.20

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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.