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Finding the Fourth Proportional to 605,276.92, 907,576.38 and 280,717.01

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Solution

The fourth proportional to 605,276.92, 907,576.38 and 280,717.01 is: 420,918.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,276.92 : 907,576.38 = 280,717.01 : x
  2. Step 2: Convert to fraction form
    605,276.92/907,576.38 = 280,717.01/x
  3. Step 3: Cross multiply
    605,276.92x = 907,576.38 × 280,717.01
  4. Step 4: Simplify right side
    605,276.92x = 254,772,126,605.75
  5. Step 5: Solve for x
    x = 254,772,126,605.75/605,276.92
  6. Step 6: Final answer
    x = 420,918.29

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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.