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Finding the Fourth Proportional to 512,205.80, 768,999.90 and 325,581.80

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Solution

The fourth proportional to 512,205.80, 768,999.90 and 325,581.80 is: 488,812.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,205.80 : 768,999.90 = 325,581.80 : x
  2. Step 2: Convert to fraction form
    512,205.80/768,999.90 = 325,581.80/x
  3. Step 3: Cross multiply
    512,205.80x = 768,999.90 × 325,581.80
  4. Step 4: Simplify right side
    512,205.80x = 250,372,371,641.82
  5. Step 5: Solve for x
    x = 250,372,371,641.82/512,205.80
  6. Step 6: Final answer
    x = 488,812.06

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1.5x scale

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.