Home / 1,291,918.40-1,939,029.60-758,772.80

Finding the Fourth Proportional to 1,291,918.40, 1,939,029.60 and 758,772.80

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Solution

The fourth proportional to 1,291,918.40, 1,939,029.60 and 758,772.80 is: 1,138,835.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,918.40 : 1,939,029.60 = 758,772.80 : x
  2. Step 2: Convert to fraction form
    1,291,918.40/1,939,029.60 = 758,772.80/x
  3. Step 3: Cross multiply
    1,291,918.40x = 1,939,029.60 × 758,772.80
  4. Step 4: Simplify right side
    1,291,918.40x = 1,471,282,918,874.88
  5. Step 5: Solve for x
    x = 1,471,282,918,874.88/1,291,918.40
  6. Step 6: Final answer
    x = 1,138,835.80

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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.