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Finding the Fourth Proportional to 551,046.69, 760,444.07 and 309,329.73

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Solution

The fourth proportional to 551,046.69, 760,444.07 and 309,329.73 is: 426,874.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,046.69 : 760,444.07 = 309,329.73 : x
  2. Step 2: Convert to fraction form
    551,046.69/760,444.07 = 309,329.73/x
  3. Step 3: Cross multiply
    551,046.69x = 760,444.07 × 309,329.73
  4. Step 4: Simplify right side
    551,046.69x = 235,227,957,306.55
  5. Step 5: Solve for x
    x = 235,227,957,306.55/551,046.69
  6. Step 6: Final answer
    x = 426,874.82

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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.