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Finding the Fourth Proportional to 639,200.62, 957,619.95 and 322,902.10

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Solution

The fourth proportional to 639,200.62, 957,619.95 and 322,902.10 is: 483,756.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,200.62 : 957,619.95 = 322,902.10 : x
  2. Step 2: Convert to fraction form
    639,200.62/957,619.95 = 322,902.10/x
  3. Step 3: Cross multiply
    639,200.62x = 957,619.95 × 322,902.10
  4. Step 4: Simplify right side
    639,200.62x = 309,217,492,856.90
  5. Step 5: Solve for x
    x = 309,217,492,856.90/639,200.62
  6. Step 6: Final answer
    x = 483,756.56

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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.