Home / 811,239.28-1,216,000.86-305,581.48

Finding the Fourth Proportional to 811,239.28, 1,216,000.86 and 305,581.48

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Solution

The fourth proportional to 811,239.28, 1,216,000.86 and 305,581.48 is: 458,049.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,239.28 : 1,216,000.86 = 305,581.48 : x
  2. Step 2: Convert to fraction form
    811,239.28/1,216,000.86 = 305,581.48/x
  3. Step 3: Cross multiply
    811,239.28x = 1,216,000.86 × 305,581.48
  4. Step 4: Simplify right side
    811,239.28x = 371,587,342,480.07
  5. Step 5: Solve for x
    x = 371,587,342,480.07/811,239.28
  6. Step 6: Final answer
    x = 458,049.00

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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.