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Finding the Fourth Proportional to 630,616.50, 945,137.46 and 315,163.62

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Solution

The fourth proportional to 630,616.50, 945,137.46 and 315,163.62 is: 472,351.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,616.50 : 945,137.46 = 315,163.62 : x
  2. Step 2: Convert to fraction form
    630,616.50/945,137.46 = 315,163.62/x
  3. Step 3: Cross multiply
    630,616.50x = 945,137.46 × 315,163.62
  4. Step 4: Simplify right side
    630,616.50x = 297,872,943,291.21
  5. Step 5: Solve for x
    x = 297,872,943,291.21/630,616.50
  6. Step 6: Final answer
    x = 472,351.97

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1.5x scale

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.