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Finding the Fourth Proportional to 636,755.58, 878,726.88 and 350,268.30

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Solution

The fourth proportional to 636,755.58, 878,726.88 and 350,268.30 is: 483,372.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,755.58 : 878,726.88 = 350,268.30 : x
  2. Step 2: Convert to fraction form
    636,755.58/878,726.88 = 350,268.30/x
  3. Step 3: Cross multiply
    636,755.58x = 878,726.88 × 350,268.30
  4. Step 4: Simplify right side
    636,755.58x = 307,790,170,421.90
  5. Step 5: Solve for x
    x = 307,790,170,421.90/636,755.58
  6. Step 6: Final answer
    x = 483,372.55

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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.