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Finding the Fourth Proportional to 611,092.66, 843,295.20 and 339,144.76

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Solution

The fourth proportional to 611,092.66, 843,295.20 and 339,144.76 is: 468,012.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,092.66 : 843,295.20 = 339,144.76 : x
  2. Step 2: Convert to fraction form
    611,092.66/843,295.20 = 339,144.76/x
  3. Step 3: Cross multiply
    611,092.66x = 843,295.20 × 339,144.76
  4. Step 4: Simplify right side
    611,092.66x = 285,999,148,213.15
  5. Step 5: Solve for x
    x = 285,999,148,213.15/611,092.66
  6. Step 6: Final answer
    x = 468,012.74

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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.