Home / 1,311,479.94-1,809,934.54-730,740.72

Finding the Fourth Proportional to 1,311,479.94, 1,809,934.54 and 730,740.72

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Solution

The fourth proportional to 1,311,479.94, 1,809,934.54 and 730,740.72 is: 1,008,473.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,311,479.94 : 1,809,934.54 = 730,740.72 : x
  2. Step 2: Convert to fraction form
    1,311,479.94/1,809,934.54 = 730,740.72/x
  3. Step 3: Cross multiply
    1,311,479.94x = 1,809,934.54 × 730,740.72
  4. Step 4: Simplify right side
    1,311,479.94x = 1,322,592,868,912.47
  5. Step 5: Solve for x
    x = 1,322,592,868,912.47/1,311,479.94
  6. Step 6: Final answer
    x = 1,008,473.58

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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.