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Finding the Fourth Proportional to 888,957.28, 1,333,478.82 and 289,917.64

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Solution

The fourth proportional to 888,957.28, 1,333,478.82 and 289,917.64 is: 434,890.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    888,957.28 : 1,333,478.82 = 289,917.64 : x
  2. Step 2: Convert to fraction form
    888,957.28/1,333,478.82 = 289,917.64/x
  3. Step 3: Cross multiply
    888,957.28x = 1,333,478.82 × 289,917.64
  4. Step 4: Simplify right side
    888,957.28x = 386,599,032,484.39
  5. Step 5: Solve for x
    x = 386,599,032,484.39/888,957.28
  6. Step 6: Final answer
    x = 434,890.45

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1.5x scale

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.