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Finding the Fourth Proportional to 450,988.53, 622,128.21 and 278,851.47

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Solution

The fourth proportional to 450,988.53, 622,128.21 and 278,851.47 is: 384,669.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,988.53 : 622,128.21 = 278,851.47 : x
  2. Step 2: Convert to fraction form
    450,988.53/622,128.21 = 278,851.47/x
  3. Step 3: Cross multiply
    450,988.53x = 622,128.21 × 278,851.47
  4. Step 4: Simplify right side
    450,988.53x = 173,481,364,076.83
  5. Step 5: Solve for x
    x = 173,481,364,076.83/450,988.53
  6. Step 6: Final answer
    x = 384,669.13

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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.