Home / 768,111.07-1,059,912.89-423,940.66

Finding the Fourth Proportional to 768,111.07, 1,059,912.89 and 423,940.66

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Solution

The fourth proportional to 768,111.07, 1,059,912.89 and 423,940.66 is: 584,993.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,111.07 : 1,059,912.89 = 423,940.66 : x
  2. Step 2: Convert to fraction form
    768,111.07/1,059,912.89 = 423,940.66/x
  3. Step 3: Cross multiply
    768,111.07x = 1,059,912.89 × 423,940.66
  4. Step 4: Simplify right side
    768,111.07x = 449,340,162,709.84
  5. Step 5: Solve for x
    x = 449,340,162,709.84/768,111.07
  6. Step 6: Final answer
    x = 584,993.74

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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.