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Finding the Fourth Proportional to 564,949.62, 779,640.72 and 306,826.51

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Solution

The fourth proportional to 564,949.62, 779,640.72 and 306,826.51 is: 423,426.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,949.62 : 779,640.72 = 306,826.51 : x
  2. Step 2: Convert to fraction form
    564,949.62/779,640.72 = 306,826.51/x
  3. Step 3: Cross multiply
    564,949.62x = 779,640.72 × 306,826.51
  4. Step 4: Simplify right side
    564,949.62x = 239,214,441,171.49
  5. Step 5: Solve for x
    x = 239,214,441,171.49/564,949.62
  6. Step 6: Final answer
    x = 423,426.15

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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.