Home / 813,715.83-1,220,435.24-214,682.76

Finding the Fourth Proportional to 813,715.83, 1,220,435.24 and 214,682.76

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Solution

The fourth proportional to 813,715.83, 1,220,435.24 and 214,682.76 is: 321,987.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,715.83 : 1,220,435.24 = 214,682.76 : x
  2. Step 2: Convert to fraction form
    813,715.83/1,220,435.24 = 214,682.76/x
  3. Step 3: Cross multiply
    813,715.83x = 1,220,435.24 × 214,682.76
  4. Step 4: Simplify right side
    813,715.83x = 262,006,404,651.05
  5. Step 5: Solve for x
    x = 262,006,404,651.05/813,715.83
  6. Step 6: Final answer
    x = 321,987.60

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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.