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Finding the Fourth Proportional to 539,831.04, 744,816.60 and 310,375.68

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Solution

The fourth proportional to 539,831.04, 744,816.60 and 310,375.68 is: 428,232.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,831.04 : 744,816.60 = 310,375.68 : x
  2. Step 2: Convert to fraction form
    539,831.04/744,816.60 = 310,375.68/x
  3. Step 3: Cross multiply
    539,831.04x = 744,816.60 × 310,375.68
  4. Step 4: Simplify right side
    539,831.04x = 231,172,958,700.29
  5. Step 5: Solve for x
    x = 231,172,958,700.29/539,831.04
  6. Step 6: Final answer
    x = 428,232.06

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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.