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Finding the Fourth Proportional to 621,663.30, 857,846.30 and 349,677.06

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Solution

The fourth proportional to 621,663.30, 857,846.30 and 349,677.06 is: 482,526.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,663.30 : 857,846.30 = 349,677.06 : x
  2. Step 2: Convert to fraction form
    621,663.30/857,846.30 = 349,677.06/x
  3. Step 3: Cross multiply
    621,663.30x = 857,846.30 × 349,677.06
  4. Step 4: Simplify right side
    621,663.30x = 299,969,172,115.88
  5. Step 5: Solve for x
    x = 299,969,172,115.88/621,663.30
  6. Step 6: Final answer
    x = 482,526.75

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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.