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Finding the Fourth Proportional to 662,431.40, 993,776.70 and 283,351.40

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Solution

The fourth proportional to 662,431.40, 993,776.70 and 283,351.40 is: 425,082.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,431.40 : 993,776.70 = 283,351.40 : x
  2. Step 2: Convert to fraction form
    662,431.40/993,776.70 = 283,351.40/x
  3. Step 3: Cross multiply
    662,431.40x = 993,776.70 × 283,351.40
  4. Step 4: Simplify right side
    662,431.40x = 281,588,019,232.38
  5. Step 5: Solve for x
    x = 281,588,019,232.38/662,431.40
  6. Step 6: Final answer
    x = 425,082.54

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.