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Finding the Fourth Proportional to 578,876.30, 798,848.51 and 320,769.97

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Solution

The fourth proportional to 578,876.30, 798,848.51 and 320,769.97 is: 442,662.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,876.30 : 798,848.51 = 320,769.97 : x
  2. Step 2: Convert to fraction form
    578,876.30/798,848.51 = 320,769.97/x
  3. Step 3: Cross multiply
    578,876.30x = 798,848.51 × 320,769.97
  4. Step 4: Simplify right side
    578,876.30x = 256,246,612,587.25
  5. Step 5: Solve for x
    x = 256,246,612,587.25/578,876.30
  6. Step 6: Final answer
    x = 442,662.12

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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.