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Finding the Fourth Proportional to 888,708.78, 1,226,387.79 and 506,858.58

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Solution

The fourth proportional to 888,708.78, 1,226,387.79 and 506,858.58 is: 699,447.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    888,708.78 : 1,226,387.79 = 506,858.58 : x
  2. Step 2: Convert to fraction form
    888,708.78/1,226,387.79 = 506,858.58/x
  3. Step 3: Cross multiply
    888,708.78x = 1,226,387.79 × 506,858.58
  4. Step 4: Simplify right side
    888,708.78x = 621,605,173,768.74
  5. Step 5: Solve for x
    x = 621,605,173,768.74/888,708.78
  6. Step 6: Final answer
    x = 699,447.54

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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.