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Finding the Fourth Proportional to 564,373.20, 845,638.20 and 485,115.60

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Solution

The fourth proportional to 564,373.20, 845,638.20 and 485,115.60 is: 726,881.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,373.20 : 845,638.20 = 485,115.60 : x
  2. Step 2: Convert to fraction form
    564,373.20/845,638.20 = 485,115.60/x
  3. Step 3: Cross multiply
    564,373.20x = 845,638.20 × 485,115.60
  4. Step 4: Simplify right side
    564,373.20x = 410,232,282,775.92
  5. Step 5: Solve for x
    x = 410,232,282,775.92/564,373.20
  6. Step 6: Final answer
    x = 726,881.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.