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Finding the Fourth Proportional to 631,980.28, 872,031.99 and 360,053.56

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Solution

The fourth proportional to 631,980.28, 872,031.99 and 360,053.56 is: 496,816.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,980.28 : 872,031.99 = 360,053.56 : x
  2. Step 2: Convert to fraction form
    631,980.28/872,031.99 = 360,053.56/x
  3. Step 3: Cross multiply
    631,980.28x = 872,031.99 × 360,053.56
  4. Step 4: Simplify right side
    631,980.28x = 313,978,222,433.38
  5. Step 5: Solve for x
    x = 313,978,222,433.38/631,980.28
  6. Step 6: Final answer
    x = 496,816.49

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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.