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Finding the Fourth Proportional to 664,255.52, 916,692.80 and 377,816.80

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Solution

The fourth proportional to 664,255.52, 916,692.80 and 377,816.80 is: 521,398.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,255.52 : 916,692.80 = 377,816.80 : x
  2. Step 2: Convert to fraction form
    664,255.52/916,692.80 = 377,816.80/x
  3. Step 3: Cross multiply
    664,255.52x = 916,692.80 × 377,816.80
  4. Step 4: Simplify right side
    664,255.52x = 346,341,940,279.04
  5. Step 5: Solve for x
    x = 346,341,940,279.04/664,255.52
  6. Step 6: Final answer
    x = 521,398.66

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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.