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Finding the Fourth Proportional to 665,493.33, 918,378.76 and 363,687.33

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Solution

The fourth proportional to 665,493.33, 918,378.76 and 363,687.33 is: 501,887.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,493.33 : 918,378.76 = 363,687.33 : x
  2. Step 2: Convert to fraction form
    665,493.33/918,378.76 = 363,687.33/x
  3. Step 3: Cross multiply
    665,493.33x = 918,378.76 × 363,687.33
  4. Step 4: Simplify right side
    665,493.33x = 334,002,719,153.11
  5. Step 5: Solve for x
    x = 334,002,719,153.11/665,493.33
  6. Step 6: Final answer
    x = 501,887.40

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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.