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Finding the Fourth Proportional to 636,646.16, 878,696.52 and 364,896.18

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Solution

The fourth proportional to 636,646.16, 878,696.52 and 364,896.18 is: 503,628.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,646.16 : 878,696.52 = 364,896.18 : x
  2. Step 2: Convert to fraction form
    636,646.16/878,696.52 = 364,896.18/x
  3. Step 3: Cross multiply
    636,646.16x = 878,696.52 × 364,896.18
  4. Step 4: Simplify right side
    636,646.16x = 320,633,002,158.93
  5. Step 5: Solve for x
    x = 320,633,002,158.93/636,646.16
  6. Step 6: Final answer
    x = 503,628.26

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Double scale
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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.