Home / 1,280,837.70-1,921,256.55-394,373.70

Finding the Fourth Proportional to 1,280,837.70, 1,921,256.55 and 394,373.70

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Solution

The fourth proportional to 1,280,837.70, 1,921,256.55 and 394,373.70 is: 591,560.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,837.70 : 1,921,256.55 = 394,373.70 : x
  2. Step 2: Convert to fraction form
    1,280,837.70/1,921,256.55 = 394,373.70/x
  3. Step 3: Cross multiply
    1,280,837.70x = 1,921,256.55 × 394,373.70
  4. Step 4: Simplify right side
    1,280,837.70x = 757,693,054,272.74
  5. Step 5: Solve for x
    x = 757,693,054,272.74/1,280,837.70
  6. Step 6: Final answer
    x = 591,560.55

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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.