Home / 1,086,355.60-1,629,533.40-687,446.80

Finding the Fourth Proportional to 1,086,355.60, 1,629,533.40 and 687,446.80

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Solution

The fourth proportional to 1,086,355.60, 1,629,533.40 and 687,446.80 is: 1,031,170.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086,355.60 : 1,629,533.40 = 687,446.80 : x
  2. Step 2: Convert to fraction form
    1,086,355.60/1,629,533.40 = 687,446.80/x
  3. Step 3: Cross multiply
    1,086,355.60x = 1,629,533.40 × 687,446.80
  4. Step 4: Simplify right side
    1,086,355.60x = 1,120,217,521,323.12
  5. Step 5: Solve for x
    x = 1,120,217,521,323.12/1,086,355.60
  6. Step 6: Final answer
    x = 1,031,170.20

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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.