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Finding the Fourth Proportional to 636,284.68, 878,074.86 and 364,356.88

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Solution

The fourth proportional to 636,284.68, 878,074.86 and 364,356.88 is: 502,813.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,284.68 : 878,074.86 = 364,356.88 : x
  2. Step 2: Convert to fraction form
    636,284.68/878,074.86 = 364,356.88/x
  3. Step 3: Cross multiply
    636,284.68x = 878,074.86 × 364,356.88
  4. Step 4: Simplify right side
    636,284.68x = 319,932,616,396.04
  5. Step 5: Solve for x
    x = 319,932,616,396.04/636,284.68
  6. Step 6: Final answer
    x = 502,813.64

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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.