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Finding the Fourth Proportional to 576,639.56, 864,959.34 and 261,089.48

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Solution

The fourth proportional to 576,639.56, 864,959.34 and 261,089.48 is: 391,634.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,639.56 : 864,959.34 = 261,089.48 : x
  2. Step 2: Convert to fraction form
    576,639.56/864,959.34 = 261,089.48/x
  3. Step 3: Cross multiply
    576,639.56x = 864,959.34 × 261,089.48
  4. Step 4: Simplify right side
    576,639.56x = 225,831,784,301.74
  5. Step 5: Solve for x
    x = 225,831,784,301.74/576,639.56
  6. Step 6: Final answer
    x = 391,634.22

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Similar ratio
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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.