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Finding the Fourth Proportional to 425,356.36, 636,983.94 and 317,026

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Solution

The fourth proportional to 425,356.36, 636,983.94 and 317,026 is: 474,755.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,356.36 : 636,983.94 = 317,026 : x
  2. Step 2: Convert to fraction form
    425,356.36/636,983.94 = 317,026/x
  3. Step 3: Cross multiply
    425,356.36x = 636,983.94 × 317,026
  4. Step 4: Simplify right side
    425,356.36x = 201,940,470,562.44
  5. Step 5: Solve for x
    x = 201,940,470,562.44/425,356.36
  6. Step 6: Final answer
    x = 474,755.97

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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.