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Finding the Fourth Proportional to 415,067.92, 621,636.47 and 400,684.41

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Solution

The fourth proportional to 415,067.92, 621,636.47 and 400,684.41 is: 600,094.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,067.92 : 621,636.47 = 400,684.41 : x
  2. Step 2: Convert to fraction form
    415,067.92/621,636.47 = 400,684.41/x
  3. Step 3: Cross multiply
    415,067.92x = 621,636.47 × 400,684.41
  4. Step 4: Simplify right side
    415,067.92x = 249,080,042,216.43
  5. Step 5: Solve for x
    x = 249,080,042,216.43/415,067.92
  6. Step 6: Final answer
    x = 600,094.66

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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.