Home / 813,117.87-1,219,566.09-214,028.86

Finding the Fourth Proportional to 813,117.87, 1,219,566.09 and 214,028.86

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Solution

The fourth proportional to 813,117.87, 1,219,566.09 and 214,028.86 is: 321,014.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,117.87 : 1,219,566.09 = 214,028.86 : x
  2. Step 2: Convert to fraction form
    813,117.87/1,219,566.09 = 214,028.86/x
  3. Step 3: Cross multiply
    813,117.87x = 1,219,566.09 × 214,028.86
  4. Step 4: Simplify right side
    813,117.87x = 261,022,341,916.13
  5. Step 5: Solve for x
    x = 261,022,341,916.13/813,117.87
  6. Step 6: Final answer
    x = 321,014.15

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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.