Home / 812,697.02-1,219,125.72-280,147.94

Finding the Fourth Proportional to 812,697.02, 1,219,125.72 and 280,147.94

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Solution

The fourth proportional to 812,697.02, 1,219,125.72 and 280,147.94 is: 420,249.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,697.02 : 1,219,125.72 = 280,147.94 : x
  2. Step 2: Convert to fraction form
    812,697.02/1,219,125.72 = 280,147.94/x
  3. Step 3: Cross multiply
    812,697.02x = 1,219,125.72 × 280,147.94
  4. Step 4: Simplify right side
    812,697.02x = 341,535,559,059.02
  5. Step 5: Solve for x
    x = 341,535,559,059.02/812,697.02
  6. Step 6: Final answer
    x = 420,249.55

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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.