Home / 920,991.53-1,381,634.96-388,591.02

Finding the Fourth Proportional to 920,991.53, 1,381,634.96 and 388,591.02

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Solution

The fourth proportional to 920,991.53, 1,381,634.96 and 388,591.02 is: 582,948.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,991.53 : 1,381,634.96 = 388,591.02 : x
  2. Step 2: Convert to fraction form
    920,991.53/1,381,634.96 = 388,591.02/x
  3. Step 3: Cross multiply
    920,991.53x = 1,381,634.96 × 388,591.02
  4. Step 4: Simplify right side
    920,991.53x = 536,890,936,431.10
  5. Step 5: Solve for x
    x = 536,890,936,431.10/920,991.53
  6. Step 6: Final answer
    x = 582,948.83

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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.