Home / 1,292,815.95-1,939,218.63-394,255.05

Finding the Fourth Proportional to 1,292,815.95, 1,939,218.63 and 394,255.05

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Solution

The fourth proportional to 1,292,815.95, 1,939,218.63 and 394,255.05 is: 591,380.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292,815.95 : 1,939,218.63 = 394,255.05 : x
  2. Step 2: Convert to fraction form
    1,292,815.95/1,939,218.63 = 394,255.05/x
  3. Step 3: Cross multiply
    1,292,815.95x = 1,939,218.63 × 394,255.05
  4. Step 4: Simplify right side
    1,292,815.95x = 764,546,737,931.58
  5. Step 5: Solve for x
    x = 764,546,737,931.58/1,292,815.95
  6. Step 6: Final answer
    x = 591,380.96

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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.