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Finding the Fourth Proportional to 621,379.04, 857,494.96 and 349,446.88

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Solution

The fourth proportional to 621,379.04, 857,494.96 and 349,446.88 is: 482,232.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,379.04 : 857,494.96 = 349,446.88 : x
  2. Step 2: Convert to fraction form
    621,379.04/857,494.96 = 349,446.88/x
  3. Step 3: Cross multiply
    621,379.04x = 857,494.96 × 349,446.88
  4. Step 4: Simplify right side
    621,379.04x = 299,648,938,387.73
  5. Step 5: Solve for x
    x = 299,648,938,387.73/621,379.04
  6. Step 6: Final answer
    x = 482,232.13

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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.