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Finding the Fourth Proportional to 551,887.76, 761,668.02 and 306,896.78

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Solution

The fourth proportional to 551,887.76, 761,668.02 and 306,896.78 is: 423,552.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,887.76 : 761,668.02 = 306,896.78 : x
  2. Step 2: Convert to fraction form
    551,887.76/761,668.02 = 306,896.78/x
  3. Step 3: Cross multiply
    551,887.76x = 761,668.02 × 306,896.78
  4. Step 4: Simplify right side
    551,887.76x = 233,753,458,958.64
  5. Step 5: Solve for x
    x = 233,753,458,958.64/551,887.76
  6. Step 6: Final answer
    x = 423,552.54

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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.