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Finding the Fourth Proportional to 528,410.75, 792,149.56 and 404,305.79

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Solution

The fourth proportional to 528,410.75, 792,149.56 and 404,305.79 is: 606,101.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,410.75 : 792,149.56 = 404,305.79 : x
  2. Step 2: Convert to fraction form
    528,410.75/792,149.56 = 404,305.79/x
  3. Step 3: Cross multiply
    528,410.75x = 792,149.56 × 404,305.79
  4. Step 4: Simplify right side
    528,410.75x = 320,270,653,653.95
  5. Step 5: Solve for x
    x = 320,270,653,653.95/528,410.75
  6. Step 6: Final answer
    x = 606,101.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.