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Finding the Fourth Proportional to 525,785.80, 787,641.90 and 303,910.60

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Solution

The fourth proportional to 525,785.80, 787,641.90 and 303,910.60 is: 455,266.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,785.80 : 787,641.90 = 303,910.60 : x
  2. Step 2: Convert to fraction form
    525,785.80/787,641.90 = 303,910.60/x
  3. Step 3: Cross multiply
    525,785.80x = 787,641.90 × 303,910.60
  4. Step 4: Simplify right side
    525,785.80x = 239,372,722,414.14
  5. Step 5: Solve for x
    x = 239,372,722,414.14/525,785.80
  6. Step 6: Final answer
    x = 455,266.62

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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.