Home / 812,876.58-1,220,071.42-413,816.10

Finding the Fourth Proportional to 812,876.58, 1,220,071.42 and 413,816.10

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Solution

The fourth proportional to 812,876.58, 1,220,071.42 and 413,816.10 is: 621,109.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,876.58 : 1,220,071.42 = 413,816.10 : x
  2. Step 2: Convert to fraction form
    812,876.58/1,220,071.42 = 413,816.10/x
  3. Step 3: Cross multiply
    812,876.58x = 1,220,071.42 × 413,816.10
  4. Step 4: Simplify right side
    812,876.58x = 504,885,196,745.86
  5. Step 5: Solve for x
    x = 504,885,196,745.86/812,876.58
  6. Step 6: Final answer
    x = 621,109.29

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Double scale
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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.