Home / 861,712.71-1,293,159.51-300,747.21

Finding the Fourth Proportional to 861,712.71, 1,293,159.51 and 300,747.21

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Solution

The fourth proportional to 861,712.71, 1,293,159.51 and 300,747.21 is: 451,326.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,712.71 : 1,293,159.51 = 300,747.21 : x
  2. Step 2: Convert to fraction form
    861,712.71/1,293,159.51 = 300,747.21/x
  3. Step 3: Cross multiply
    861,712.71x = 1,293,159.51 × 300,747.21
  4. Step 4: Simplify right side
    861,712.71x = 388,914,114,717.47
  5. Step 5: Solve for x
    x = 388,914,114,717.47/861,712.71
  6. Step 6: Final answer
    x = 451,326.89

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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.