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Finding the Fourth Proportional to 508,427.82, 701,606.61 and 278,979.93

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Solution

The fourth proportional to 508,427.82, 701,606.61 and 278,979.93 is: 384,979.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,427.82 : 701,606.61 = 278,979.93 : x
  2. Step 2: Convert to fraction form
    508,427.82/701,606.61 = 278,979.93/x
  3. Step 3: Cross multiply
    508,427.82x = 701,606.61 × 278,979.93
  4. Step 4: Simplify right side
    508,427.82x = 195,734,162,945.34
  5. Step 5: Solve for x
    x = 195,734,162,945.34/508,427.82
  6. Step 6: Final answer
    x = 384,979.25

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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.