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Finding the Fourth Proportional to 630,870.63, 945,600.54 and 331,382.85

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Solution

The fourth proportional to 630,870.63, 945,600.54 and 331,382.85 is: 496,703.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,870.63 : 945,600.54 = 331,382.85 : x
  2. Step 2: Convert to fraction form
    630,870.63/945,600.54 = 331,382.85/x
  3. Step 3: Cross multiply
    630,870.63x = 945,600.54 × 331,382.85
  4. Step 4: Simplify right side
    630,870.63x = 313,355,801,906.74
  5. Step 5: Solve for x
    x = 313,355,801,906.74/630,870.63
  6. Step 6: Final answer
    x = 496,703.74

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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.