Home / 1,328,611.60-1,992,917.40-1,255,128.40

Finding the Fourth Proportional to 1,328,611.60, 1,992,917.40 and 1,255,128.40

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Solution

The fourth proportional to 1,328,611.60, 1,992,917.40 and 1,255,128.40 is: 1,882,692.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,611.60 : 1,992,917.40 = 1,255,128.40 : x
  2. Step 2: Convert to fraction form
    1,328,611.60/1,992,917.40 = 1,255,128.40/x
  3. Step 3: Cross multiply
    1,328,611.60x = 1,992,917.40 × 1,255,128.40
  4. Step 4: Simplify right side
    1,328,611.60x = 2,501,367,227,594.16
  5. Step 5: Solve for x
    x = 2,501,367,227,594.16/1,328,611.60
  6. Step 6: Final answer
    x = 1,882,692.60

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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.