Home / 861,720.21-1,293,170.76-300,754.71

Finding the Fourth Proportional to 861,720.21, 1,293,170.76 and 300,754.71

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Solution

The fourth proportional to 861,720.21, 1,293,170.76 and 300,754.71 is: 451,338.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,720.21 : 1,293,170.76 = 300,754.71 : x
  2. Step 2: Convert to fraction form
    861,720.21/1,293,170.76 = 300,754.71/x
  3. Step 3: Cross multiply
    861,720.21x = 1,293,170.76 × 300,754.71
  4. Step 4: Simplify right side
    861,720.21x = 388,927,196,904.28
  5. Step 5: Solve for x
    x = 388,927,196,904.28/861,720.21
  6. Step 6: Final answer
    x = 451,338.14

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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.