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Finding the Fourth Proportional to 564,631.62, 779,192.40 and 306,508.50

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Solution

The fourth proportional to 564,631.62, 779,192.40 and 306,508.50 is: 422,982.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,631.62 : 779,192.40 = 306,508.50 : x
  2. Step 2: Convert to fraction form
    564,631.62/779,192.40 = 306,508.50/x
  3. Step 3: Cross multiply
    564,631.62x = 779,192.40 × 306,508.50
  4. Step 4: Simplify right side
    564,631.62x = 238,829,093,735.40
  5. Step 5: Solve for x
    x = 238,829,093,735.40/564,631.62
  6. Step 6: Final answer
    x = 422,982.14

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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.