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Finding the Fourth Proportional to 1,091,234.22, 1,505,978.94 and 661,532.46

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Solution

The fourth proportional to 1,091,234.22, 1,505,978.94 and 661,532.46 is: 912,960.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,091,234.22 : 1,505,978.94 = 661,532.46 : x
  2. Step 2: Convert to fraction form
    1,091,234.22/1,505,978.94 = 661,532.46/x
  3. Step 3: Cross multiply
    1,091,234.22x = 1,505,978.94 × 661,532.46
  4. Step 4: Simplify right side
    1,091,234.22x = 996,253,952,886.39
  5. Step 5: Solve for x
    x = 996,253,952,886.39/1,091,234.22
  6. Step 6: Final answer
    x = 912,960.70

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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.