Home / 920,921.10-1,381,529.27-388,520.55

Finding the Fourth Proportional to 920,921.10, 1,381,529.27 and 388,520.55

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Solution

The fourth proportional to 920,921.10, 1,381,529.27 and 388,520.55 is: 582,843.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,921.10 : 1,381,529.27 = 388,520.55 : x
  2. Step 2: Convert to fraction form
    920,921.10/1,381,529.27 = 388,520.55/x
  3. Step 3: Cross multiply
    920,921.10x = 1,381,529.27 × 388,520.55
  4. Step 4: Simplify right side
    920,921.10x = 536,752,510,607.37
  5. Step 5: Solve for x
    x = 536,752,510,607.37/920,921.10
  6. Step 6: Final answer
    x = 582,843.10

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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.