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Finding the Fourth Proportional to 665,496.27, 918,391.64 and 363,690.27

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Solution

The fourth proportional to 665,496.27, 918,391.64 and 363,690.27 is: 501,896.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,496.27 : 918,391.64 = 363,690.27 : x
  2. Step 2: Convert to fraction form
    665,496.27/918,391.64 = 363,690.27/x
  3. Step 3: Cross multiply
    665,496.27x = 918,391.64 × 363,690.27
  4. Step 4: Simplify right side
    665,496.27x = 334,010,101,698.89
  5. Step 5: Solve for x
    x = 334,010,101,698.89/665,496.27
  6. Step 6: Final answer
    x = 501,896.28

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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.