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Finding the Fourth Proportional to 621,474.24, 857,633.22 and 349,537.80

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Solution

The fourth proportional to 621,474.24, 857,633.22 and 349,537.80 is: 482,361.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,474.24 : 857,633.22 = 349,537.80 : x
  2. Step 2: Convert to fraction form
    621,474.24/857,633.22 = 349,537.80/x
  3. Step 3: Cross multiply
    621,474.24x = 857,633.22 × 349,537.80
  4. Step 4: Simplify right side
    621,474.24x = 299,775,228,925.72
  5. Step 5: Solve for x
    x = 299,775,228,925.72/621,474.24
  6. Step 6: Final answer
    x = 482,361.47

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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.