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Finding the Fourth Proportional to 636,693.43, 878,701.38 and 364,797.39

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Solution

The fourth proportional to 636,693.43, 878,701.38 and 364,797.39 is: 503,457.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,693.43 : 878,701.38 = 364,797.39 : x
  2. Step 2: Convert to fraction form
    636,693.43/878,701.38 = 364,797.39/x
  3. Step 3: Cross multiply
    636,693.43x = 878,701.38 × 364,797.39
  4. Step 4: Simplify right side
    636,693.43x = 320,547,969,049.83
  5. Step 5: Solve for x
    x = 320,547,969,049.83/636,693.43
  6. Step 6: Final answer
    x = 503,457.32

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Double scale
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Similar ratio
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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.