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Finding the Fourth Proportional to 888,208.64, 1,225,737.60 and 485,792

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Solution

The fourth proportional to 888,208.64, 1,225,737.60 and 485,792 is: 670,398.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    888,208.64 : 1,225,737.60 = 485,792 : x
  2. Step 2: Convert to fraction form
    888,208.64/1,225,737.60 = 485,792/x
  3. Step 3: Cross multiply
    888,208.64x = 1,225,737.60 × 485,792
  4. Step 4: Simplify right side
    888,208.64x = 595,453,520,179.20
  5. Step 5: Solve for x
    x = 595,453,520,179.20/888,208.64
  6. Step 6: Final answer
    x = 670,398.25

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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.