Home / 812,876.83-1,220,071.79-413,816.35

Finding the Fourth Proportional to 812,876.83, 1,220,071.79 and 413,816.35

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Solution

The fourth proportional to 812,876.83, 1,220,071.79 and 413,816.35 is: 621,109.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,876.83 : 1,220,071.79 = 413,816.35 : x
  2. Step 2: Convert to fraction form
    812,876.83/1,220,071.79 = 413,816.35/x
  3. Step 3: Cross multiply
    812,876.83x = 1,220,071.79 × 413,816.35
  4. Step 4: Simplify right side
    812,876.83x = 504,885,654,875.77
  5. Step 5: Solve for x
    x = 504,885,654,875.77/812,876.83
  6. Step 6: Final answer
    x = 621,109.66

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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.