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Finding the Fourth Proportional to 433,266.30, 649,899.45 and 393,900.30

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Solution

The fourth proportional to 433,266.30, 649,899.45 and 393,900.30 is: 590,850.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    433,266.30 : 649,899.45 = 393,900.30 : x
  2. Step 2: Convert to fraction form
    433,266.30/649,899.45 = 393,900.30/x
  3. Step 3: Cross multiply
    433,266.30x = 649,899.45 × 393,900.30
  4. Step 4: Simplify right side
    433,266.30x = 255,995,588,324.84
  5. Step 5: Solve for x
    x = 255,995,588,324.84/433,266.30
  6. Step 6: Final answer
    x = 590,850.45

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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.