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Finding the Fourth Proportional to 872,679.64, 1,309,035.66 and 273,627.40

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Solution

The fourth proportional to 872,679.64, 1,309,035.66 and 273,627.40 is: 410,446.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,679.64 : 1,309,035.66 = 273,627.40 : x
  2. Step 2: Convert to fraction form
    872,679.64/1,309,035.66 = 273,627.40/x
  3. Step 3: Cross multiply
    872,679.64x = 1,309,035.66 × 273,627.40
  4. Step 4: Simplify right side
    872,679.64x = 358,188,024,153.08
  5. Step 5: Solve for x
    x = 358,188,024,153.08/872,679.64
  6. Step 6: Final answer
    x = 410,446.18

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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.