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Finding the Fourth Proportional to 631,988.82, 872,147.66 and 345,508.92

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Solution

The fourth proportional to 631,988.82, 872,147.66 and 345,508.92 is: 476,804.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,988.82 : 872,147.66 = 345,508.92 : x
  2. Step 2: Convert to fraction form
    631,988.82/872,147.66 = 345,508.92/x
  3. Step 3: Cross multiply
    631,988.82x = 872,147.66 × 345,508.92
  4. Step 4: Simplify right side
    631,988.82x = 301,334,794,359.58
  5. Step 5: Solve for x
    x = 301,334,794,359.58/631,988.82
  6. Step 6: Final answer
    x = 476,804.00

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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.