Home / 1,291,745.60-1,936,927.20-542,945.60

Finding the Fourth Proportional to 1,291,745.60, 1,936,927.20 and 542,945.60

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Solution

The fourth proportional to 1,291,745.60, 1,936,927.20 and 542,945.60 is: 814,127.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,745.60 : 1,936,927.20 = 542,945.60 : x
  2. Step 2: Convert to fraction form
    1,291,745.60/1,936,927.20 = 542,945.60/x
  3. Step 3: Cross multiply
    1,291,745.60x = 1,936,927.20 × 542,945.60
  4. Step 4: Simplify right side
    1,291,745.60x = 1,051,646,100,760.32
  5. Step 5: Solve for x
    x = 1,051,646,100,760.32/1,291,745.60
  6. Step 6: Final answer
    x = 814,127.88

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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.