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Finding the Fourth Proportional to 564,511.54, 779,026.66 and 306,388.47

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Solution

The fourth proportional to 564,511.54, 779,026.66 and 306,388.47 is: 422,816.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,511.54 : 779,026.66 = 306,388.47 : x
  2. Step 2: Convert to fraction form
    564,511.54/779,026.66 = 306,388.47/x
  3. Step 3: Cross multiply
    564,511.54x = 779,026.66 × 306,388.47
  4. Step 4: Simplify right side
    564,511.54x = 238,684,786,446.61
  5. Step 5: Solve for x
    x = 238,684,786,446.61/564,511.54
  6. Step 6: Final answer
    x = 422,816.49

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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.