Home / 1,389,108.60-2,083,662.90-857,230.20

Finding the Fourth Proportional to 1,389,108.60, 2,083,662.90 and 857,230.20

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Solution

The fourth proportional to 1,389,108.60, 2,083,662.90 and 857,230.20 is: 1,285,845.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,108.60 : 2,083,662.90 = 857,230.20 : x
  2. Step 2: Convert to fraction form
    1,389,108.60/2,083,662.90 = 857,230.20/x
  3. Step 3: Cross multiply
    1,389,108.60x = 2,083,662.90 × 857,230.20
  4. Step 4: Simplify right side
    1,389,108.60x = 1,786,178,764,499.58
  5. Step 5: Solve for x
    x = 1,786,178,764,499.58/1,389,108.60
  6. Step 6: Final answer
    x = 1,285,845.30

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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.