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Finding the Fourth Proportional to 635,305.64, 877,132.06 and 393,846.26

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Solution

The fourth proportional to 635,305.64, 877,132.06 and 393,846.26 is: 543,762.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,305.64 : 877,132.06 = 393,846.26 : x
  2. Step 2: Convert to fraction form
    635,305.64/877,132.06 = 393,846.26/x
  3. Step 3: Cross multiply
    635,305.64x = 877,132.06 × 393,846.26
  4. Step 4: Simplify right side
    635,305.64x = 345,455,175,986.82
  5. Step 5: Solve for x
    x = 345,455,175,986.82/635,305.64
  6. Step 6: Final answer
    x = 543,762.18

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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.