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Finding the Fourth Proportional to 561,684.66, 775,070.01 and 319,948.26

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Solution

The fourth proportional to 561,684.66, 775,070.01 and 319,948.26 is: 441,497.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,684.66 : 775,070.01 = 319,948.26 : x
  2. Step 2: Convert to fraction form
    561,684.66/775,070.01 = 319,948.26/x
  3. Step 3: Cross multiply
    561,684.66x = 775,070.01 × 319,948.26
  4. Step 4: Simplify right side
    561,684.66x = 247,982,301,077.68
  5. Step 5: Solve for x
    x = 247,982,301,077.68/561,684.66
  6. Step 6: Final answer
    x = 441,497.37

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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.