Home / 763,661.80-1,145,201.10-231,005.80

Finding the Fourth Proportional to 763,661.80, 1,145,201.10 and 231,005.80

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Solution

The fourth proportional to 763,661.80, 1,145,201.10 and 231,005.80 is: 346,420.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,661.80 : 1,145,201.10 = 231,005.80 : x
  2. Step 2: Convert to fraction form
    763,661.80/1,145,201.10 = 231,005.80/x
  3. Step 3: Cross multiply
    763,661.80x = 1,145,201.10 × 231,005.80
  4. Step 4: Simplify right side
    763,661.80x = 264,548,096,266.38
  5. Step 5: Solve for x
    x = 264,548,096,266.38/763,661.80
  6. Step 6: Final answer
    x = 346,420.49

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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.