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Finding the Fourth Proportional to 801,009, 1,105,395.66 and 443,313

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Solution

The fourth proportional to 801,009, 1,105,395.66 and 443,313 is: 611,773.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    801,009 : 1,105,395.66 = 443,313 : x
  2. Step 2: Convert to fraction form
    801,009/1,105,395.66 = 443,313/x
  3. Step 3: Cross multiply
    801,009x = 1,105,395.66 × 443,313
  4. Step 4: Simplify right side
    801,009x = 490,036,266,221.58
  5. Step 5: Solve for x
    x = 490,036,266,221.58/801,009
  6. Step 6: Final answer
    x = 611,773.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.