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Finding the Fourth Proportional to 455,717.26, 629,066.97 and 407,887.57

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Solution

The fourth proportional to 455,717.26, 629,066.97 and 407,887.57 is: 563,043.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,717.26 : 629,066.97 = 407,887.57 : x
  2. Step 2: Convert to fraction form
    455,717.26/629,066.97 = 407,887.57/x
  3. Step 3: Cross multiply
    455,717.26x = 629,066.97 × 407,887.57
  4. Step 4: Simplify right side
    455,717.26x = 256,588,600,889.74
  5. Step 5: Solve for x
    x = 256,588,600,889.74/455,717.26
  6. Step 6: Final answer
    x = 563,043.41

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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.