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Finding the Fourth Proportional to 618,642.89, 928,034.43 and 555,072.44

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Solution

The fourth proportional to 618,642.89, 928,034.43 and 555,072.44 is: 832,671.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,642.89 : 928,034.43 = 555,072.44 : x
  2. Step 2: Convert to fraction form
    618,642.89/928,034.43 = 555,072.44/x
  3. Step 3: Cross multiply
    618,642.89x = 928,034.43 × 555,072.44
  4. Step 4: Simplify right side
    618,642.89x = 515,126,330,823.94
  5. Step 5: Solve for x
    x = 515,126,330,823.94/618,642.89
  6. Step 6: Final answer
    x = 832,671.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.