Home / 811,197.69-1,215,938.45-305,539.88

Finding the Fourth Proportional to 811,197.69, 1,215,938.45 and 305,539.88

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Solution

The fourth proportional to 811,197.69, 1,215,938.45 and 305,539.88 is: 457,986.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,197.69 : 1,215,938.45 = 305,539.88 : x
  2. Step 2: Convert to fraction form
    811,197.69/1,215,938.45 = 305,539.88/x
  3. Step 3: Cross multiply
    811,197.69x = 1,215,938.45 × 305,539.88
  4. Step 4: Simplify right side
    811,197.69x = 371,517,682,020.69
  5. Step 5: Solve for x
    x = 371,517,682,020.69/811,197.69
  6. Step 6: Final answer
    x = 457,986.62

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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.