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Finding the Fourth Proportional to 448,889.58, 622,088.64 and 440,373.78

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Solution

The fourth proportional to 448,889.58, 622,088.64 and 440,373.78 is: 610,287.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,889.58 : 622,088.64 = 440,373.78 : x
  2. Step 2: Convert to fraction form
    448,889.58/622,088.64 = 440,373.78/x
  3. Step 3: Cross multiply
    448,889.58x = 622,088.64 × 440,373.78
  4. Step 4: Simplify right side
    448,889.58x = 273,951,525,891.86
  5. Step 5: Solve for x
    x = 273,951,525,891.86/448,889.58
  6. Step 6: Final answer
    x = 610,287.11

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.