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Finding the Fourth Proportional to 888,246, 1,225,789.20 and 485,838

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Solution

The fourth proportional to 888,246, 1,225,789.20 and 485,838 is: 670,461.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    888,246 : 1,225,789.20 = 485,838 : x
  2. Step 2: Convert to fraction form
    888,246/1,225,789.20 = 485,838/x
  3. Step 3: Cross multiply
    888,246x = 1,225,789.20 × 485,838
  4. Step 4: Simplify right side
    888,246x = 595,534,973,349.60
  5. Step 5: Solve for x
    x = 595,534,973,349.60/888,246
  6. Step 6: Final answer
    x = 670,461.76

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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.