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Finding the Fourth Proportional to 635,967.62, 877,638.71 and 345,581.48

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Solution

The fourth proportional to 635,967.62, 877,638.71 and 345,581.48 is: 476,904.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,967.62 : 877,638.71 = 345,581.48 : x
  2. Step 2: Convert to fraction form
    635,967.62/877,638.71 = 345,581.48/x
  3. Step 3: Cross multiply
    635,967.62x = 877,638.71 × 345,581.48
  4. Step 4: Simplify right side
    635,967.62x = 303,295,684,307.09
  5. Step 5: Solve for x
    x = 303,295,684,307.09/635,967.62
  6. Step 6: Final answer
    x = 476,904.29

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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.