Home / 809,999.92-1,117,795.44-447,448.72

Finding the Fourth Proportional to 809,999.92, 1,117,795.44 and 447,448.72

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Solution

The fourth proportional to 809,999.92, 1,117,795.44 and 447,448.72 is: 617,476.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,999.92 : 1,117,795.44 = 447,448.72 : x
  2. Step 2: Convert to fraction form
    809,999.92/1,117,795.44 = 447,448.72/x
  3. Step 3: Cross multiply
    809,999.92x = 1,117,795.44 × 447,448.72
  4. Step 4: Simplify right side
    809,999.92x = 500,156,138,849.84
  5. Step 5: Solve for x
    x = 500,156,138,849.84/809,999.92
  6. Step 6: Final answer
    x = 617,476.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.