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Finding the Fourth Proportional to 695,874.09, 960,290.63 and 405,467.56

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Solution

The fourth proportional to 695,874.09, 960,290.63 and 405,467.56 is: 559,536.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,874.09 : 960,290.63 = 405,467.56 : x
  2. Step 2: Convert to fraction form
    695,874.09/960,290.63 = 405,467.56/x
  3. Step 3: Cross multiply
    695,874.09x = 960,290.63 × 405,467.56
  4. Step 4: Simplify right side
    695,874.09x = 389,366,695,729.40
  5. Step 5: Solve for x
    x = 389,366,695,729.40/695,874.09
  6. Step 6: Final answer
    x = 559,536.13

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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.