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Finding the Fourth Proportional to 551,434.88, 760,890.65 and 344,678.80

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Solution

The fourth proportional to 551,434.88, 760,890.65 and 344,678.80 is: 475,600.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,434.88 : 760,890.65 = 344,678.80 : x
  2. Step 2: Convert to fraction form
    551,434.88/760,890.65 = 344,678.80/x
  3. Step 3: Cross multiply
    551,434.88x = 760,890.65 × 344,678.80
  4. Step 4: Simplify right side
    551,434.88x = 262,262,876,173.22
  5. Step 5: Solve for x
    x = 262,262,876,173.22/551,434.88
  6. Step 6: Final answer
    x = 475,600.81

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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.