Home / 812,115.24-1,120,705.44-449,531.34

Finding the Fourth Proportional to 812,115.24, 1,120,705.44 and 449,531.34

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Solution

The fourth proportional to 812,115.24, 1,120,705.44 and 449,531.34 is: 620,345.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,115.24 : 1,120,705.44 = 449,531.34 : x
  2. Step 2: Convert to fraction form
    812,115.24/1,120,705.44 = 449,531.34/x
  3. Step 3: Cross multiply
    812,115.24x = 1,120,705.44 × 449,531.34
  4. Step 4: Simplify right side
    812,115.24x = 503,792,218,188.49
  5. Step 5: Solve for x
    x = 503,792,218,188.49/812,115.24
  6. Step 6: Final answer
    x = 620,345.73

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Double scale
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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.