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Finding the Fourth Proportional to 551,625.07, 761,172.96 and 322,128.58

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Solution

The fourth proportional to 551,625.07, 761,172.96 and 322,128.58 is: 444,496.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,625.07 : 761,172.96 = 322,128.58 : x
  2. Step 2: Convert to fraction form
    551,625.07/761,172.96 = 322,128.58/x
  3. Step 3: Cross multiply
    551,625.07x = 761,172.96 × 322,128.58
  4. Step 4: Simplify right side
    551,625.07x = 245,195,564,739.20
  5. Step 5: Solve for x
    x = 245,195,564,739.20/551,625.07
  6. Step 6: Final answer
    x = 444,496.78

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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.