Home / 801,385.75-1,105,912.74-438,809.70

Finding the Fourth Proportional to 801,385.75, 1,105,912.74 and 438,809.70

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Solution

The fourth proportional to 801,385.75, 1,105,912.74 and 438,809.70 is: 605,557.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    801,385.75 : 1,105,912.74 = 438,809.70 : x
  2. Step 2: Convert to fraction form
    801,385.75/1,105,912.74 = 438,809.70/x
  3. Step 3: Cross multiply
    801,385.75x = 1,105,912.74 × 438,809.70
  4. Step 4: Simplify right side
    801,385.75x = 485,285,243,458.29
  5. Step 5: Solve for x
    x = 485,285,243,458.29/801,385.75
  6. Step 6: Final answer
    x = 605,557.61

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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.