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Finding the Fourth Proportional to 626,813.98, 865,020.81 and 340,351.54

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Solution

The fourth proportional to 626,813.98, 865,020.81 and 340,351.54 is: 469,694.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,813.98 : 865,020.81 = 340,351.54 : x
  2. Step 2: Convert to fraction form
    626,813.98/865,020.81 = 340,351.54/x
  3. Step 3: Cross multiply
    626,813.98x = 865,020.81 × 340,351.54
  4. Step 4: Simplify right side
    626,813.98x = 294,411,164,815.55
  5. Step 5: Solve for x
    x = 294,411,164,815.55/626,813.98
  6. Step 6: Final answer
    x = 469,694.64

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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.