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Finding the Fourth Proportional to 872,003.76, 1,308,337.74 and 303,448.04

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Solution

The fourth proportional to 872,003.76, 1,308,337.74 and 303,448.04 is: 455,287.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,003.76 : 1,308,337.74 = 303,448.04 : x
  2. Step 2: Convert to fraction form
    872,003.76/1,308,337.74 = 303,448.04/x
  3. Step 3: Cross multiply
    872,003.76x = 1,308,337.74 × 303,448.04
  4. Step 4: Simplify right side
    872,003.76x = 397,012,522,861.03
  5. Step 5: Solve for x
    x = 397,012,522,861.03/872,003.76
  6. Step 6: Final answer
    x = 455,287.63

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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.