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Finding the Fourth Proportional to 664,224.48, 916,650 and 377,785.80

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Solution

The fourth proportional to 664,224.48, 916,650 and 377,785.80 is: 521,355.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,224.48 : 916,650 = 377,785.80 : x
  2. Step 2: Convert to fraction form
    664,224.48/916,650 = 377,785.80/x
  3. Step 3: Cross multiply
    664,224.48x = 916,650 × 377,785.80
  4. Step 4: Simplify right side
    664,224.48x = 346,297,353,570
  5. Step 5: Solve for x
    x = 346,297,353,570/664,224.48
  6. Step 6: Final answer
    x = 521,355.90

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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.