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Finding the Fourth Proportional to 899,850.96, 1,241,794.14 and 491,954.64

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Solution

The fourth proportional to 899,850.96, 1,241,794.14 and 491,954.64 is: 678,897.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    899,850.96 : 1,241,794.14 = 491,954.64 : x
  2. Step 2: Convert to fraction form
    899,850.96/1,241,794.14 = 491,954.64/x
  3. Step 3: Cross multiply
    899,850.96x = 1,241,794.14 × 491,954.64
  4. Step 4: Simplify right side
    899,850.96x = 610,906,389,097.81
  5. Step 5: Solve for x
    x = 610,906,389,097.81/899,850.96
  6. Step 6: Final answer
    x = 678,897.30

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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.