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Finding the Fourth Proportional to 564,885.60, 779,548.26 and 310,236.78

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Solution

The fourth proportional to 564,885.60, 779,548.26 and 310,236.78 is: 428,130.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,885.60 : 779,548.26 = 310,236.78 : x
  2. Step 2: Convert to fraction form
    564,885.60/779,548.26 = 310,236.78/x
  3. Step 3: Cross multiply
    564,885.60x = 779,548.26 × 310,236.78
  4. Step 4: Simplify right side
    564,885.60x = 241,844,542,037.00
  5. Step 5: Solve for x
    x = 241,844,542,037.00/564,885.60
  6. Step 6: Final answer
    x = 428,130.12

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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.