Home / 920,372.20-1,380,755.42-521,201.64

Finding the Fourth Proportional to 920,372.20, 1,380,755.42 and 521,201.64

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Solution

The fourth proportional to 920,372.20, 1,380,755.42 and 521,201.64 is: 781,914.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,372.20 : 1,380,755.42 = 521,201.64 : x
  2. Step 2: Convert to fraction form
    920,372.20/1,380,755.42 = 521,201.64/x
  3. Step 3: Cross multiply
    920,372.20x = 1,380,755.42 × 521,201.64
  4. Step 4: Simplify right side
    920,372.20x = 719,651,989,342.89
  5. Step 5: Solve for x
    x = 719,651,989,342.89/920,372.20
  6. Step 6: Final answer
    x = 781,914.09

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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.