Home / 920,385.88-1,380,728.38-272,027.86

Finding the Fourth Proportional to 920,385.88, 1,380,728.38 and 272,027.86

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Solution

The fourth proportional to 920,385.88, 1,380,728.38 and 272,027.86 is: 408,085.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,385.88 : 1,380,728.38 = 272,027.86 : x
  2. Step 2: Convert to fraction form
    920,385.88/1,380,728.38 = 272,027.86/x
  3. Step 3: Cross multiply
    920,385.88x = 1,380,728.38 × 272,027.86
  4. Step 4: Simplify right side
    920,385.88x = 375,596,586,452.67
  5. Step 5: Solve for x
    x = 375,596,586,452.67/920,385.88
  6. Step 6: Final answer
    x = 408,085.99

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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.