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Finding the Fourth Proportional to 554,990.93, 765,889.74 and 300,342.11

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Solution

The fourth proportional to 554,990.93, 765,889.74 and 300,342.11 is: 414,473.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,990.93 : 765,889.74 = 300,342.11 : x
  2. Step 2: Convert to fraction form
    554,990.93/765,889.74 = 300,342.11/x
  3. Step 3: Cross multiply
    554,990.93x = 765,889.74 × 300,342.11
  4. Step 4: Simplify right side
    554,990.93x = 230,028,940,538.95
  5. Step 5: Solve for x
    x = 230,028,940,538.95/554,990.93
  6. Step 6: Final answer
    x = 414,473.33

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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.