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Finding the Fourth Proportional to 539,791.75, 744,978.23 and 313,437.25

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Solution

The fourth proportional to 539,791.75, 744,978.23 and 313,437.25 is: 432,581.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,791.75 : 744,978.23 = 313,437.25 : x
  2. Step 2: Convert to fraction form
    539,791.75/744,978.23 = 313,437.25/x
  3. Step 3: Cross multiply
    539,791.75x = 744,978.23 × 313,437.25
  4. Step 4: Simplify right side
    539,791.75x = 233,503,927,721.07
  5. Step 5: Solve for x
    x = 233,503,927,721.07/539,791.75
  6. Step 6: Final answer
    x = 432,581.51

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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.