Home / 898,908.22-1,238,787.84-643,816.54

Finding the Fourth Proportional to 898,908.22, 1,238,787.84 and 643,816.54

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Solution

The fourth proportional to 898,908.22, 1,238,787.84 and 643,816.54 is: 887,245.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    898,908.22 : 1,238,787.84 = 643,816.54 : x
  2. Step 2: Convert to fraction form
    898,908.22/1,238,787.84 = 643,816.54/x
  3. Step 3: Cross multiply
    898,908.22x = 1,238,787.84 × 643,816.54
  4. Step 4: Simplify right side
    898,908.22x = 797,552,100,942.87
  5. Step 5: Solve for x
    x = 797,552,100,942.87/898,908.22
  6. Step 6: Final answer
    x = 887,245.31

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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.