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Finding the Fourth Proportional to 539,153.53, 744,067.97 and 309,785.07

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Solution

The fourth proportional to 539,153.53, 744,067.97 and 309,785.07 is: 427,524.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,153.53 : 744,067.97 = 309,785.07 : x
  2. Step 2: Convert to fraction form
    539,153.53/744,067.97 = 309,785.07/x
  3. Step 3: Cross multiply
    539,153.53x = 744,067.97 × 309,785.07
  4. Step 4: Simplify right side
    539,153.53x = 230,501,149,177.74
  5. Step 5: Solve for x
    x = 230,501,149,177.74/539,153.53
  6. Step 6: Final answer
    x = 427,524.14

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1.5x scale

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.