Home / 1,421,869.26-1,962,181.23-818,257.74

Finding the Fourth Proportional to 1,421,869.26, 1,962,181.23 and 818,257.74

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Solution

The fourth proportional to 1,421,869.26, 1,962,181.23 and 818,257.74 is: 1,129,196.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421,869.26 : 1,962,181.23 = 818,257.74 : x
  2. Step 2: Convert to fraction form
    1,421,869.26/1,962,181.23 = 818,257.74/x
  3. Step 3: Cross multiply
    1,421,869.26x = 1,962,181.23 × 818,257.74
  4. Step 4: Simplify right side
    1,421,869.26x = 1,605,569,978,730.22
  5. Step 5: Solve for x
    x = 1,605,569,978,730.22/1,421,869.26
  6. Step 6: Final answer
    x = 1,129,196.63

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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.