Home / 811,960.20-1,218,017.10-220,984.20

Finding the Fourth Proportional to 811,960.20, 1,218,017.10 and 220,984.20

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Solution

The fourth proportional to 811,960.20, 1,218,017.10 and 220,984.20 is: 331,497.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,960.20 : 1,218,017.10 = 220,984.20 : x
  2. Step 2: Convert to fraction form
    811,960.20/1,218,017.10 = 220,984.20/x
  3. Step 3: Cross multiply
    811,960.20x = 1,218,017.10 × 220,984.20
  4. Step 4: Simplify right side
    811,960.20x = 269,162,534,429.82
  5. Step 5: Solve for x
    x = 269,162,534,429.82/811,960.20
  6. Step 6: Final answer
    x = 331,497.20

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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.