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Finding the Fourth Proportional to 626,958.96, 865,256.88 and 355,074.48

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Solution

The fourth proportional to 626,958.96, 865,256.88 and 355,074.48 is: 490,033.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,958.96 : 865,256.88 = 355,074.48 : x
  2. Step 2: Convert to fraction form
    626,958.96/865,256.88 = 355,074.48/x
  3. Step 3: Cross multiply
    626,958.96x = 865,256.88 × 355,074.48
  4. Step 4: Simplify right side
    626,958.96x = 307,230,636,732.42
  5. Step 5: Solve for x
    x = 307,230,636,732.42/626,958.96
  6. Step 6: Final answer
    x = 490,033.09

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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.