Home / 1,328,991.60-1,991,111.40-808,719.60

Finding the Fourth Proportional to 1,328,991.60, 1,991,111.40 and 808,719.60

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Solution

The fourth proportional to 1,328,991.60, 1,991,111.40 and 808,719.60 is: 1,211,633.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,991.60 : 1,991,111.40 = 808,719.60 : x
  2. Step 2: Convert to fraction form
    1,328,991.60/1,991,111.40 = 808,719.60/x
  3. Step 3: Cross multiply
    1,328,991.60x = 1,991,111.40 × 808,719.60
  4. Step 4: Simplify right side
    1,328,991.60x = 1,610,250,814,963.44
  5. Step 5: Solve for x
    x = 1,610,250,814,963.44/1,328,991.60
  6. Step 6: Final answer
    x = 1,211,633.55

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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.