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Finding the Fourth Proportional to 626,420.22, 864,460.46 and 339,940.31

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Solution

The fourth proportional to 626,420.22, 864,460.46 and 339,940.31 is: 469,117.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,420.22 : 864,460.46 = 339,940.31 : x
  2. Step 2: Convert to fraction form
    626,420.22/864,460.46 = 339,940.31/x
  3. Step 3: Cross multiply
    626,420.22x = 864,460.46 × 339,940.31
  4. Step 4: Simplify right side
    626,420.22x = 293,864,956,755.14
  5. Step 5: Solve for x
    x = 293,864,956,755.14/626,420.22
  6. Step 6: Final answer
    x = 469,117.93

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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.