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Finding the Fourth Proportional to 636,678.25, 878,740.77 and 364,928.29

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Solution

The fourth proportional to 636,678.25, 878,740.77 and 364,928.29 is: 503,672.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,678.25 : 878,740.77 = 364,928.29 : x
  2. Step 2: Convert to fraction form
    636,678.25/878,740.77 = 364,928.29/x
  3. Step 3: Cross multiply
    636,678.25x = 878,740.77 × 364,928.29
  4. Step 4: Simplify right side
    636,678.25x = 320,677,366,549.38
  5. Step 5: Solve for x
    x = 320,677,366,549.38/636,678.25
  6. Step 6: Final answer
    x = 503,672.56

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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.