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Finding the Fourth Proportional to 902,431.80, 1,353,647.70 and 341,484.60

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Solution

The fourth proportional to 902,431.80, 1,353,647.70 and 341,484.60 is: 512,226.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    902,431.80 : 1,353,647.70 = 341,484.60 : x
  2. Step 2: Convert to fraction form
    902,431.80/1,353,647.70 = 341,484.60/x
  3. Step 3: Cross multiply
    902,431.80x = 1,353,647.70 × 341,484.60
  4. Step 4: Simplify right side
    902,431.80x = 462,249,843,375.42
  5. Step 5: Solve for x
    x = 462,249,843,375.42/902,431.80
  6. Step 6: Final answer
    x = 512,226.90

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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.