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Finding the Fourth Proportional to 888,165.76, 1,224,200.64 and 661,728.64

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Solution

The fourth proportional to 888,165.76, 1,224,200.64 and 661,728.64 is: 912,091.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    888,165.76 : 1,224,200.64 = 661,728.64 : x
  2. Step 2: Convert to fraction form
    888,165.76/1,224,200.64 = 661,728.64/x
  3. Step 3: Cross multiply
    888,165.76x = 1,224,200.64 × 661,728.64
  4. Step 4: Simplify right side
    888,165.76x = 810,088,624,594.33
  5. Step 5: Solve for x
    x = 810,088,624,594.33/888,165.76
  6. Step 6: Final answer
    x = 912,091.71

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1.5x scale

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.