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Finding the Fourth Proportional to 636,369.60, 878,193.52 and 374,736.32

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Solution

The fourth proportional to 636,369.60, 878,193.52 and 374,736.32 is: 517,138.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,369.60 : 878,193.52 = 374,736.32 : x
  2. Step 2: Convert to fraction form
    636,369.60/878,193.52 = 374,736.32/x
  3. Step 3: Cross multiply
    636,369.60x = 878,193.52 × 374,736.32
  4. Step 4: Simplify right side
    636,369.60x = 329,091,007,932.65
  5. Step 5: Solve for x
    x = 329,091,007,932.65/636,369.60
  6. Step 6: Final answer
    x = 517,138.17

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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.