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Finding the Fourth Proportional to 486,324.88, 671,185.26 and 404,508.79

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Solution

The fourth proportional to 486,324.88, 671,185.26 and 404,508.79 is: 558,269.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,324.88 : 671,185.26 = 404,508.79 : x
  2. Step 2: Convert to fraction form
    486,324.88/671,185.26 = 404,508.79/x
  3. Step 3: Cross multiply
    486,324.88x = 671,185.26 × 404,508.79
  4. Step 4: Simplify right side
    486,324.88x = 271,500,335,710.47
  5. Step 5: Solve for x
    x = 271,500,335,710.47/486,324.88
  6. Step 6: Final answer
    x = 558,269.48

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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.