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Finding the Fourth Proportional to 626,654.84, 864,781.25 and 340,172.42

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Solution

The fourth proportional to 626,654.84, 864,781.25 and 340,172.42 is: 469,436.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,654.84 : 864,781.25 = 340,172.42 : x
  2. Step 2: Convert to fraction form
    626,654.84/864,781.25 = 340,172.42/x
  3. Step 3: Cross multiply
    626,654.84x = 864,781.25 × 340,172.42
  4. Step 4: Simplify right side
    626,654.84x = 294,174,724,558.36
  5. Step 5: Solve for x
    x = 294,174,724,558.36/626,654.84
  6. Step 6: Final answer
    x = 469,436.62

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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.