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Finding the Fourth Proportional to 636,968.89, 879,010.41 and 361,377.69

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Solution

The fourth proportional to 636,968.89, 879,010.41 and 361,377.69 is: 498,697.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,968.89 : 879,010.41 = 361,377.69 : x
  2. Step 2: Convert to fraction form
    636,968.89/879,010.41 = 361,377.69/x
  3. Step 3: Cross multiply
    636,968.89x = 879,010.41 × 361,377.69
  4. Step 4: Simplify right side
    636,968.89x = 317,654,751,451.75
  5. Step 5: Solve for x
    x = 317,654,751,451.75/636,968.89
  6. Step 6: Final answer
    x = 498,697.43

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1.5x scale

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.