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Finding the Fourth Proportional to 626,371.86, 864,395.47 and 339,891.94

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Solution

The fourth proportional to 626,371.86, 864,395.47 and 339,891.94 is: 469,052.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,371.86 : 864,395.47 = 339,891.94 : x
  2. Step 2: Convert to fraction form
    626,371.86/864,395.47 = 339,891.94/x
  3. Step 3: Cross multiply
    626,371.86x = 864,395.47 × 339,891.94
  4. Step 4: Simplify right side
    626,371.86x = 293,801,052,818.98
  5. Step 5: Solve for x
    x = 293,801,052,818.98/626,371.86
  6. Step 6: Final answer
    x = 469,052.12

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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.