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Finding the Fourth Proportional to 554,629.52, 765,388.78 and 299,980.64

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Solution

The fourth proportional to 554,629.52, 765,388.78 and 299,980.64 is: 413,973.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,629.52 : 765,388.78 = 299,980.64 : x
  2. Step 2: Convert to fraction form
    554,629.52/765,388.78 = 299,980.64/x
  3. Step 3: Cross multiply
    554,629.52x = 765,388.78 × 299,980.64
  4. Step 4: Simplify right side
    554,629.52x = 229,601,816,073.22
  5. Step 5: Solve for x
    x = 229,601,816,073.22/554,629.52
  6. Step 6: Final answer
    x = 413,973.31

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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.