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Finding the Fourth Proportional to 450,988.84, 622,128.64 and 278,851.78

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Solution

The fourth proportional to 450,988.84, 622,128.64 and 278,851.78 is: 384,669.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,988.84 : 622,128.64 = 278,851.78 : x
  2. Step 2: Convert to fraction form
    450,988.84/622,128.64 = 278,851.78/x
  3. Step 3: Cross multiply
    450,988.84x = 622,128.64 × 278,851.78
  4. Step 4: Simplify right side
    450,988.84x = 173,481,678,652.98
  5. Step 5: Solve for x
    x = 173,481,678,652.98/450,988.84
  6. Step 6: Final answer
    x = 384,669.56

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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.