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Finding the Fourth Proportional to 564,768.48, 779,374.89 and 306,639.75

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Solution

The fourth proportional to 564,768.48, 779,374.89 and 306,639.75 is: 423,159.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,768.48 : 779,374.89 = 306,639.75 : x
  2. Step 2: Convert to fraction form
    564,768.48/779,374.89 = 306,639.75/x
  3. Step 3: Cross multiply
    564,768.48x = 779,374.89 × 306,639.75
  4. Step 4: Simplify right side
    564,768.48x = 238,987,321,425.88
  5. Step 5: Solve for x
    x = 238,987,321,425.88/564,768.48
  6. Step 6: Final answer
    x = 423,159.81

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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.