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Finding the Fourth Proportional to 664,227, 916,628.40 and 377,746.74

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Solution

The fourth proportional to 664,227, 916,628.40 and 377,746.74 is: 521,287.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,227 : 916,628.40 = 377,746.74 : x
  2. Step 2: Convert to fraction form
    664,227/916,628.40 = 377,746.74/x
  3. Step 3: Cross multiply
    664,227x = 916,628.40 × 377,746.74
  4. Step 4: Simplify right side
    664,227x = 346,253,389,891.42
  5. Step 5: Solve for x
    x = 346,253,389,891.42/664,227
  6. Step 6: Final answer
    x = 521,287.74

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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.