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Finding the Fourth Proportional to 564,489.18, 779,359.86 and 349,857

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Solution

The fourth proportional to 564,489.18, 779,359.86 and 349,857 is: 483,028.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,489.18 : 779,359.86 = 349,857 : x
  2. Step 2: Convert to fraction form
    564,489.18/779,359.86 = 349,857/x
  3. Step 3: Cross multiply
    564,489.18x = 779,359.86 × 349,857
  4. Step 4: Simplify right side
    564,489.18x = 272,664,502,540.02
  5. Step 5: Solve for x
    x = 272,664,502,540.02/564,489.18
  6. Step 6: Final answer
    x = 483,028.75

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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.