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Finding the Fourth Proportional to 491,449.07, 677,939.60 and 338,221.23

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Solution

The fourth proportional to 491,449.07, 677,939.60 and 338,221.23 is: 466,566.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,449.07 : 677,939.60 = 338,221.23 : x
  2. Step 2: Convert to fraction form
    491,449.07/677,939.60 = 338,221.23/x
  3. Step 3: Cross multiply
    491,449.07x = 677,939.60 × 338,221.23
  4. Step 4: Simplify right side
    491,449.07x = 229,293,563,686.60
  5. Step 5: Solve for x
    x = 229,293,563,686.60/491,449.07
  6. Step 6: Final answer
    x = 466,566.28

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1.5x scale

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.