Home / 812,695.02-1,219,122.72-280,145.94

Finding the Fourth Proportional to 812,695.02, 1,219,122.72 and 280,145.94

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Solution

The fourth proportional to 812,695.02, 1,219,122.72 and 280,145.94 is: 420,246.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,695.02 : 1,219,122.72 = 280,145.94 : x
  2. Step 2: Convert to fraction form
    812,695.02/1,219,122.72 = 280,145.94/x
  3. Step 3: Cross multiply
    812,695.02x = 1,219,122.72 × 280,145.94
  4. Step 4: Simplify right side
    812,695.02x = 341,532,280,369.76
  5. Step 5: Solve for x
    x = 341,532,280,369.76/812,695.02
  6. Step 6: Final answer
    x = 420,246.55

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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.