Home / 811,901.50-1,217,857.29-212,857.27

Finding the Fourth Proportional to 811,901.50, 1,217,857.29 and 212,857.27

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Solution

The fourth proportional to 811,901.50, 1,217,857.29 and 212,857.27 is: 319,287.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,901.50 : 1,217,857.29 = 212,857.27 : x
  2. Step 2: Convert to fraction form
    811,901.50/1,217,857.29 = 212,857.27/x
  3. Step 3: Cross multiply
    811,901.50x = 1,217,857.29 × 212,857.27
  4. Step 4: Simplify right side
    811,901.50x = 259,229,777,999.00
  5. Step 5: Solve for x
    x = 259,229,777,999.00/811,901.50
  6. Step 6: Final answer
    x = 319,287.23

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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.