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Finding the Fourth Proportional to 635,281.64, 877,098.94 and 393,822.26

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Solution

The fourth proportional to 635,281.64, 877,098.94 and 393,822.26 is: 543,729.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,281.64 : 877,098.94 = 393,822.26 : x
  2. Step 2: Convert to fraction form
    635,281.64/877,098.94 = 393,822.26/x
  3. Step 3: Cross multiply
    635,281.64x = 877,098.94 × 393,822.26
  4. Step 4: Simplify right side
    635,281.64x = 345,421,081,424.35
  5. Step 5: Solve for x
    x = 345,421,081,424.35/635,281.64
  6. Step 6: Final answer
    x = 543,729.05

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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.