Home / 1,311,817.05-1,798,507.77-1,287,905.85

Finding the Fourth Proportional to 1,311,817.05, 1,798,507.77 and 1,287,905.85

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Solution

The fourth proportional to 1,311,817.05, 1,798,507.77 and 1,287,905.85 is: 1,765,725.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,311,817.05 : 1,798,507.77 = 1,287,905.85 : x
  2. Step 2: Convert to fraction form
    1,311,817.05/1,798,507.77 = 1,287,905.85/x
  3. Step 3: Cross multiply
    1,311,817.05x = 1,798,507.77 × 1,287,905.85
  4. Step 4: Simplify right side
    1,311,817.05x = 2,316,308,678,253.45
  5. Step 5: Solve for x
    x = 2,316,308,678,253.45/1,311,817.05
  6. Step 6: Final answer
    x = 1,765,725.39

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.