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Finding the Fourth Proportional to 564,636.06, 779,198.36 and 306,512.87

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Solution

The fourth proportional to 564,636.06, 779,198.36 and 306,512.87 is: 422,988.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,636.06 : 779,198.36 = 306,512.87 : x
  2. Step 2: Convert to fraction form
    564,636.06/779,198.36 = 306,512.87/x
  3. Step 3: Cross multiply
    564,636.06x = 779,198.36 × 306,512.87
  4. Step 4: Simplify right side
    564,636.06x = 238,834,320,194.34
  5. Step 5: Solve for x
    x = 238,834,320,194.34/564,636.06
  6. Step 6: Final answer
    x = 422,988.08

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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.