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Finding the Fourth Proportional to 664,236.04, 916,640.82 and 377,755.72

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Solution

The fourth proportional to 664,236.04, 916,640.82 and 377,755.72 is: 521,300.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,236.04 : 916,640.82 = 377,755.72 : x
  2. Step 2: Convert to fraction form
    664,236.04/916,640.82 = 377,755.72/x
  3. Step 3: Cross multiply
    664,236.04x = 916,640.82 × 377,755.72
  4. Step 4: Simplify right side
    664,236.04x = 346,266,312,940.49
  5. Step 5: Solve for x
    x = 346,266,312,940.49/664,236.04
  6. Step 6: Final answer
    x = 521,300.10

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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.