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Finding the Fourth Proportional to 611,330.22, 843,638.76 and 382,020.66

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Solution

The fourth proportional to 611,330.22, 843,638.76 and 382,020.66 is: 527,190.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,330.22 : 843,638.76 = 382,020.66 : x
  2. Step 2: Convert to fraction form
    611,330.22/843,638.76 = 382,020.66/x
  3. Step 3: Cross multiply
    611,330.22x = 843,638.76 × 382,020.66
  4. Step 4: Simplify right side
    611,330.22x = 322,287,435,896.78
  5. Step 5: Solve for x
    x = 322,287,435,896.78/611,330.22
  6. Step 6: Final answer
    x = 527,190.42

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Double scale
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Similar ratio
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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.