Home / 813,623.36-1,220,380.32-281,151.68

Finding the Fourth Proportional to 813,623.36, 1,220,380.32 and 281,151.68

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Solution

The fourth proportional to 813,623.36, 1,220,380.32 and 281,151.68 is: 421,708.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,623.36 : 1,220,380.32 = 281,151.68 : x
  2. Step 2: Convert to fraction form
    813,623.36/1,220,380.32 = 281,151.68/x
  3. Step 3: Cross multiply
    813,623.36x = 1,220,380.32 × 281,151.68
  4. Step 4: Simplify right side
    813,623.36x = 343,111,977,206.94
  5. Step 5: Solve for x
    x = 343,111,977,206.94/813,623.36
  6. Step 6: Final answer
    x = 421,708.61

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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.