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Finding the Fourth Proportional to 551,804.07, 761,504.79 and 310,108.68

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Solution

The fourth proportional to 551,804.07, 761,504.79 and 310,108.68 is: 427,958.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,804.07 : 761,504.79 = 310,108.68 : x
  2. Step 2: Convert to fraction form
    551,804.07/761,504.79 = 310,108.68/x
  3. Step 3: Cross multiply
    551,804.07x = 761,504.79 × 310,108.68
  4. Step 4: Simplify right side
    551,804.07x = 236,149,245,240.58
  5. Step 5: Solve for x
    x = 236,149,245,240.58/551,804.07
  6. Step 6: Final answer
    x = 427,958.51

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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.