Home / 1,311,590.68-1,809,967.78-730,811.50

Finding the Fourth Proportional to 1,311,590.68, 1,809,967.78 and 730,811.50

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Solution

The fourth proportional to 1,311,590.68, 1,809,967.78 and 730,811.50 is: 1,008,504.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,311,590.68 : 1,809,967.78 = 730,811.50 : x
  2. Step 2: Convert to fraction form
    1,311,590.68/1,809,967.78 = 730,811.50/x
  3. Step 3: Cross multiply
    1,311,590.68x = 1,809,967.78 × 730,811.50
  4. Step 4: Simplify right side
    1,311,590.68x = 1,322,745,268,253.47
  5. Step 5: Solve for x
    x = 1,322,745,268,253.47/1,311,590.68
  6. Step 6: Final answer
    x = 1,008,504.63

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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.