Home / 814,405.60-1,219,640.10-778,976.20

Finding the Fourth Proportional to 814,405.60, 1,219,640.10 and 778,976.20

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Solution

The fourth proportional to 814,405.60, 1,219,640.10 and 778,976.20 is: 1,166,581.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,405.60 : 1,219,640.10 = 778,976.20 : x
  2. Step 2: Convert to fraction form
    814,405.60/1,219,640.10 = 778,976.20/x
  3. Step 3: Cross multiply
    814,405.60x = 1,219,640.10 × 778,976.20
  4. Step 4: Simplify right side
    814,405.60x = 950,070,610,465.62
  5. Step 5: Solve for x
    x = 950,070,610,465.62/814,405.60
  6. Step 6: Final answer
    x = 1,166,581.63

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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.