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Finding the Fourth Proportional to 721,377.25, 995,546.69 and 403,425.25

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Solution

The fourth proportional to 721,377.25, 995,546.69 and 403,425.25 is: 556,752.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,377.25 : 995,546.69 = 403,425.25 : x
  2. Step 2: Convert to fraction form
    721,377.25/995,546.69 = 403,425.25/x
  3. Step 3: Cross multiply
    721,377.25x = 995,546.69 × 403,425.25
  4. Step 4: Simplify right side
    721,377.25x = 401,628,670,282.80
  5. Step 5: Solve for x
    x = 401,628,670,282.80/721,377.25
  6. Step 6: Final answer
    x = 556,752.61

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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.