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Finding the Fourth Proportional to 564,979.51, 779,481.66 and 319,930.75

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Solution

The fourth proportional to 564,979.51, 779,481.66 and 319,930.75 is: 441,396.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,979.51 : 779,481.66 = 319,930.75 : x
  2. Step 2: Convert to fraction form
    564,979.51/779,481.66 = 319,930.75/x
  3. Step 3: Cross multiply
    564,979.51x = 779,481.66 × 319,930.75
  4. Step 4: Simplify right side
    564,979.51x = 249,380,152,095.05
  5. Step 5: Solve for x
    x = 249,380,152,095.05/564,979.51
  6. Step 6: Final answer
    x = 441,396.81

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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.