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Finding the Fourth Proportional to 425,355.36, 636,982.44 and 317,025

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Solution

The fourth proportional to 425,355.36, 636,982.44 and 317,025 is: 474,754.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,355.36 : 636,982.44 = 317,025 : x
  2. Step 2: Convert to fraction form
    425,355.36/636,982.44 = 317,025/x
  3. Step 3: Cross multiply
    425,355.36x = 636,982.44 × 317,025
  4. Step 4: Simplify right side
    425,355.36x = 201,939,358,041.00
  5. Step 5: Solve for x
    x = 201,939,358,041.00/425,355.36
  6. Step 6: Final answer
    x = 474,754.47

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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.