Home / 1,311,520.41-1,809,990.77-730,782

Finding the Fourth Proportional to 1,311,520.41, 1,809,990.77 and 730,782

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Solution

The fourth proportional to 1,311,520.41, 1,809,990.77 and 730,782 is: 1,008,530.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,311,520.41 : 1,809,990.77 = 730,782 : x
  2. Step 2: Convert to fraction form
    1,311,520.41/1,809,990.77 = 730,782/x
  3. Step 3: Cross multiply
    1,311,520.41x = 1,809,990.77 × 730,782
  4. Step 4: Simplify right side
    1,311,520.41x = 1,322,708,671,228.23
  5. Step 5: Solve for x
    x = 1,322,708,671,228.23/1,311,520.41
  6. Step 6: Final answer
    x = 1,008,530.76

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1.5x scale

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.