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Finding the Fourth Proportional to 564,641.92, 779,207.20 and 310,009.52

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Solution

The fourth proportional to 564,641.92, 779,207.20 and 310,009.52 is: 427,813.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,641.92 : 779,207.20 = 310,009.52 : x
  2. Step 2: Convert to fraction form
    564,641.92/779,207.20 = 310,009.52/x
  3. Step 3: Cross multiply
    564,641.92x = 779,207.20 × 310,009.52
  4. Step 4: Simplify right side
    564,641.92x = 241,561,650,052.54
  5. Step 5: Solve for x
    x = 241,561,650,052.54/564,641.92
  6. Step 6: Final answer
    x = 427,813.88

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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.