Home / 1,311,365.60-1,808,991.86-902,758.06

Finding the Fourth Proportional to 1,311,365.60, 1,808,991.86 and 902,758.06

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Solution

The fourth proportional to 1,311,365.60, 1,808,991.86 and 902,758.06 is: 1,245,329.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,311,365.60 : 1,808,991.86 = 902,758.06 : x
  2. Step 2: Convert to fraction form
    1,311,365.60/1,808,991.86 = 902,758.06/x
  3. Step 3: Cross multiply
    1,311,365.60x = 1,808,991.86 × 902,758.06
  4. Step 4: Simplify right side
    1,311,365.60x = 1,633,081,982,375.85
  5. Step 5: Solve for x
    x = 1,633,081,982,375.85/1,311,365.60
  6. Step 6: Final answer
    x = 1,245,329.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.