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Finding the Fourth Proportional to 578,759.08, 798,668.92 and 320,625.40

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Solution

The fourth proportional to 578,759.08, 798,668.92 and 320,625.40 is: 442,452.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,759.08 : 798,668.92 = 320,625.40 : x
  2. Step 2: Convert to fraction form
    578,759.08/798,668.92 = 320,625.40/x
  3. Step 3: Cross multiply
    578,759.08x = 798,668.92 × 320,625.40
  4. Step 4: Simplify right side
    578,759.08x = 256,073,541,942.57
  5. Step 5: Solve for x
    x = 256,073,541,942.57/578,759.08
  6. Step 6: Final answer
    x = 442,452.74

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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.