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Finding the Fourth Proportional to 539,419.50, 744,678.66 and 394,062

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Solution

The fourth proportional to 539,419.50, 744,678.66 and 394,062 is: 544,009.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,419.50 : 744,678.66 = 394,062 : x
  2. Step 2: Convert to fraction form
    539,419.50/744,678.66 = 394,062/x
  3. Step 3: Cross multiply
    539,419.50x = 744,678.66 × 394,062
  4. Step 4: Simplify right side
    539,419.50x = 293,449,562,116.92
  5. Step 5: Solve for x
    x = 293,449,562,116.92/539,419.50
  6. Step 6: Final answer
    x = 544,009.93

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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.