Home / 920,247.90-1,381,169.34-918,120.12

Finding the Fourth Proportional to 920,247.90, 1,381,169.34 and 918,120.12

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Solution

The fourth proportional to 920,247.90, 1,381,169.34 and 918,120.12 is: 1,377,975.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,247.90 : 1,381,169.34 = 918,120.12 : x
  2. Step 2: Convert to fraction form
    920,247.90/1,381,169.34 = 918,120.12/x
  3. Step 3: Cross multiply
    920,247.90x = 1,381,169.34 × 918,120.12
  4. Step 4: Simplify right side
    920,247.90x = 1,268,079,360,181.12
  5. Step 5: Solve for x
    x = 1,268,079,360,181.12/920,247.90
  6. Step 6: Final answer
    x = 1,377,975.83

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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.