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Finding the Fourth Proportional to 630,163.10, 945,244.65 and 551,431.10

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Solution

The fourth proportional to 630,163.10, 945,244.65 and 551,431.10 is: 827,146.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,163.10 : 945,244.65 = 551,431.10 : x
  2. Step 2: Convert to fraction form
    630,163.10/945,244.65 = 551,431.10/x
  3. Step 3: Cross multiply
    630,163.10x = 945,244.65 × 551,431.10
  4. Step 4: Simplify right side
    630,163.10x = 521,237,297,118.62
  5. Step 5: Solve for x
    x = 521,237,297,118.62/630,163.10
  6. Step 6: Final answer
    x = 827,146.65

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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.