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Finding the Fourth Proportional to 664,670.70, 997,331.34 and 411,883.56

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Solution

The fourth proportional to 664,670.70, 997,331.34 and 411,883.56 is: 618,026.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,670.70 : 997,331.34 = 411,883.56 : x
  2. Step 2: Convert to fraction form
    664,670.70/997,331.34 = 411,883.56/x
  3. Step 3: Cross multiply
    664,670.70x = 997,331.34 × 411,883.56
  4. Step 4: Simplify right side
    664,670.70x = 410,784,382,818.77
  5. Step 5: Solve for x
    x = 410,784,382,818.77/664,670.70
  6. Step 6: Final answer
    x = 618,026.92

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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.