Home / 861,511.88-1,188,865.86-479,530.46

Finding the Fourth Proportional to 861,511.88, 1,188,865.86 and 479,530.46

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Solution

The fourth proportional to 861,511.88, 1,188,865.86 and 479,530.46 is: 661,740.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,511.88 : 1,188,865.86 = 479,530.46 : x
  2. Step 2: Convert to fraction form
    861,511.88/1,188,865.86 = 479,530.46/x
  3. Step 3: Cross multiply
    861,511.88x = 1,188,865.86 × 479,530.46
  4. Step 4: Simplify right side
    861,511.88x = 570,097,392,724.10
  5. Step 5: Solve for x
    x = 570,097,392,724.10/861,511.88
  6. Step 6: Final answer
    x = 661,740.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.