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Finding the Fourth Proportional to 554,415.99, 765,089.61 and 321,864.51

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Solution

The fourth proportional to 554,415.99, 765,089.61 and 321,864.51 is: 444,170.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,415.99 : 765,089.61 = 321,864.51 : x
  2. Step 2: Convert to fraction form
    554,415.99/765,089.61 = 321,864.51/x
  3. Step 3: Cross multiply
    554,415.99x = 765,089.61 × 321,864.51
  4. Step 4: Simplify right side
    554,415.99x = 246,255,190,516.02
  5. Step 5: Solve for x
    x = 246,255,190,516.02/554,415.99
  6. Step 6: Final answer
    x = 444,170.43

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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.