Home / 1,261,390.80-1,892,086.20-729,949.80

Finding the Fourth Proportional to 1,261,390.80, 1,892,086.20 and 729,949.80

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Solution

The fourth proportional to 1,261,390.80, 1,892,086.20 and 729,949.80 is: 1,094,924.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261,390.80 : 1,892,086.20 = 729,949.80 : x
  2. Step 2: Convert to fraction form
    1,261,390.80/1,892,086.20 = 729,949.80/x
  3. Step 3: Cross multiply
    1,261,390.80x = 1,892,086.20 × 729,949.80
  4. Step 4: Simplify right side
    1,261,390.80x = 1,381,127,943,272.76
  5. Step 5: Solve for x
    x = 1,381,127,943,272.76/1,261,390.80
  6. Step 6: Final answer
    x = 1,094,924.70

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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.