Home / 1,285,228.80-1,927,843.20-986,630.40

Finding the Fourth Proportional to 1,285,228.80, 1,927,843.20 and 986,630.40

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Solution

The fourth proportional to 1,285,228.80, 1,927,843.20 and 986,630.40 is: 1,479,945.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,285,228.80 : 1,927,843.20 = 986,630.40 : x
  2. Step 2: Convert to fraction form
    1,285,228.80/1,927,843.20 = 986,630.40/x
  3. Step 3: Cross multiply
    1,285,228.80x = 1,927,843.20 × 986,630.40
  4. Step 4: Simplify right side
    1,285,228.80x = 1,902,068,707,553.28
  5. Step 5: Solve for x
    x = 1,902,068,707,553.28/1,285,228.80
  6. Step 6: Final answer
    x = 1,479,945.60

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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.