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Finding the Fourth Proportional to 489,234.04, 674,518 and 316,847.44

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Solution

The fourth proportional to 489,234.04, 674,518 and 316,847.44 is: 436,844.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,234.04 : 674,518 = 316,847.44 : x
  2. Step 2: Convert to fraction form
    489,234.04/674,518 = 316,847.44/x
  3. Step 3: Cross multiply
    489,234.04x = 674,518 × 316,847.44
  4. Step 4: Simplify right side
    489,234.04x = 213,719,301,533.92
  5. Step 5: Solve for x
    x = 213,719,301,533.92/489,234.04
  6. Step 6: Final answer
    x = 436,844.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.