Home / 1,390,381.20-2,084,016.60-791,629.20

Finding the Fourth Proportional to 1,390,381.20, 2,084,016.60 and 791,629.20

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Solution

The fourth proportional to 1,390,381.20, 2,084,016.60 and 791,629.20 is: 1,186,558.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,381.20 : 2,084,016.60 = 791,629.20 : x
  2. Step 2: Convert to fraction form
    1,390,381.20/2,084,016.60 = 791,629.20/x
  3. Step 3: Cross multiply
    1,390,381.20x = 2,084,016.60 × 791,629.20
  4. Step 4: Simplify right side
    1,390,381.20x = 1,649,768,393,844.72
  5. Step 5: Solve for x
    x = 1,649,768,393,844.72/1,390,381.20
  6. Step 6: Final answer
    x = 1,186,558.33

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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.