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Finding the Fourth Proportional to 528,379.59, 792,629.53 and 191,578.86

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Solution

The fourth proportional to 528,379.59, 792,629.53 and 191,578.86 is: 287,390.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,379.59 : 792,629.53 = 191,578.86 : x
  2. Step 2: Convert to fraction form
    528,379.59/792,629.53 = 191,578.86/x
  3. Step 3: Cross multiply
    528,379.59x = 792,629.53 × 191,578.86
  4. Step 4: Simplify right side
    528,379.59x = 151,851,061,759.74
  5. Step 5: Solve for x
    x = 151,851,061,759.74/528,379.59
  6. Step 6: Final answer
    x = 287,390.10

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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.