Home / 811,199.18-1,215,940.70-305,541.38

Finding the Fourth Proportional to 811,199.18, 1,215,940.70 and 305,541.38

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Solution

The fourth proportional to 811,199.18, 1,215,940.70 and 305,541.38 is: 457,988.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,199.18 : 1,215,940.70 = 305,541.38 : x
  2. Step 2: Convert to fraction form
    811,199.18/1,215,940.70 = 305,541.38/x
  3. Step 3: Cross multiply
    811,199.18x = 1,215,940.70 × 305,541.38
  4. Step 4: Simplify right side
    811,199.18x = 371,520,199,476.17
  5. Step 5: Solve for x
    x = 371,520,199,476.17/811,199.18
  6. Step 6: Final answer
    x = 457,988.87

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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.