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Finding the Fourth Proportional to 664,256.48, 916,694.20 and 377,817.84

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Solution

The fourth proportional to 664,256.48, 916,694.20 and 377,817.84 is: 521,400.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,256.48 : 916,694.20 = 377,817.84 : x
  2. Step 2: Convert to fraction form
    664,256.48/916,694.20 = 377,817.84/x
  3. Step 3: Cross multiply
    664,256.48x = 916,694.20 × 377,817.84
  4. Step 4: Simplify right side
    664,256.48x = 346,343,422,584.53
  5. Step 5: Solve for x
    x = 346,343,422,584.53/664,256.48
  6. Step 6: Final answer
    x = 521,400.14

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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.