Home / 1,278,090.70-1,915,678.27-798,539.02

Finding the Fourth Proportional to 1,278,090.70, 1,915,678.27 and 798,539.02

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Solution

The fourth proportional to 1,278,090.70, 1,915,678.27 and 798,539.02 is: 1,196,897.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,090.70 : 1,915,678.27 = 798,539.02 : x
  2. Step 2: Convert to fraction form
    1,278,090.70/1,915,678.27 = 798,539.02/x
  3. Step 3: Cross multiply
    1,278,090.70x = 1,915,678.27 × 798,539.02
  4. Step 4: Simplify right side
    1,278,090.70x = 1,529,743,848,361.10
  5. Step 5: Solve for x
    x = 1,529,743,848,361.10/1,278,090.70
  6. Step 6: Final answer
    x = 1,196,897.72

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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.