Home / 801,421.34-1,105,975.05-438,839.42

Finding the Fourth Proportional to 801,421.34, 1,105,975.05 and 438,839.42

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Solution

The fourth proportional to 801,421.34, 1,105,975.05 and 438,839.42 is: 605,605.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    801,421.34 : 1,105,975.05 = 438,839.42 : x
  2. Step 2: Convert to fraction form
    801,421.34/1,105,975.05 = 438,839.42/x
  3. Step 3: Cross multiply
    801,421.34x = 1,105,975.05 × 438,839.42
  4. Step 4: Simplify right side
    801,421.34x = 485,345,449,476.47
  5. Step 5: Solve for x
    x = 485,345,449,476.47/801,421.34
  6. Step 6: Final answer
    x = 605,605.85

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1.5x scale

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.