Home / 1,555,797.75-2,147,000.96-840,405.75

Finding the Fourth Proportional to 1,555,797.75, 2,147,000.96 and 840,405.75

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Solution

The fourth proportional to 1,555,797.75, 2,147,000.96 and 840,405.75 is: 1,159,759.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,555,797.75 : 2,147,000.96 = 840,405.75 : x
  2. Step 2: Convert to fraction form
    1,555,797.75/2,147,000.96 = 840,405.75/x
  3. Step 3: Cross multiply
    1,555,797.75x = 2,147,000.96 × 840,405.75
  4. Step 4: Simplify right side
    1,555,797.75x = 1,804,351,947,837.49
  5. Step 5: Solve for x
    x = 1,804,351,947,837.49/1,555,797.75
  6. Step 6: Final answer
    x = 1,159,759.97

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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.