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Finding the Fourth Proportional to 564,887.60, 779,551.02 and 310,238.76

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Solution

The fourth proportional to 564,887.60, 779,551.02 and 310,238.76 is: 428,132.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,887.60 : 779,551.02 = 310,238.76 : x
  2. Step 2: Convert to fraction form
    564,887.60/779,551.02 = 310,238.76/x
  3. Step 3: Cross multiply
    564,887.60x = 779,551.02 × 310,238.76
  4. Step 4: Simplify right side
    564,887.60x = 241,846,941,801.54
  5. Step 5: Solve for x
    x = 241,846,941,801.54/564,887.60
  6. Step 6: Final answer
    x = 428,132.86

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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.