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Finding the Fourth Proportional to 554,629.53, 765,388.08 and 299,980.11

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Solution

The fourth proportional to 554,629.53, 765,388.08 and 299,980.11 is: 413,972.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,629.53 : 765,388.08 = 299,980.11 : x
  2. Step 2: Convert to fraction form
    554,629.53/765,388.08 = 299,980.11/x
  3. Step 3: Cross multiply
    554,629.53x = 765,388.08 × 299,980.11
  4. Step 4: Simplify right side
    554,629.53x = 229,601,200,431.09
  5. Step 5: Solve for x
    x = 229,601,200,431.09/554,629.53
  6. Step 6: Final answer
    x = 413,972.19

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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.