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Finding the Fourth Proportional to 636,326.22, 878,107.59 and 349,844.22

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Solution

The fourth proportional to 636,326.22, 878,107.59 and 349,844.22 is: 482,772.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,326.22 : 878,107.59 = 349,844.22 : x
  2. Step 2: Convert to fraction form
    636,326.22/878,107.59 = 349,844.22/x
  3. Step 3: Cross multiply
    636,326.22x = 878,107.59 × 349,844.22
  4. Step 4: Simplify right side
    636,326.22x = 307,200,864,899.63
  5. Step 5: Solve for x
    x = 307,200,864,899.63/636,326.22
  6. Step 6: Final answer
    x = 482,772.60

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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.