Home / 1,231,136.40-1,846,445.40-521,187.60

Finding the Fourth Proportional to 1,231,136.40, 1,846,445.40 and 521,187.60

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Solution

The fourth proportional to 1,231,136.40, 1,846,445.40 and 521,187.60 is: 781,671.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,136.40 : 1,846,445.40 = 521,187.60 : x
  2. Step 2: Convert to fraction form
    1,231,136.40/1,846,445.40 = 521,187.60/x
  3. Step 3: Cross multiply
    1,231,136.40x = 1,846,445.40 × 521,187.60
  4. Step 4: Simplify right side
    1,231,136.40x = 962,344,446,557.04
  5. Step 5: Solve for x
    x = 962,344,446,557.04/1,231,136.40
  6. Step 6: Final answer
    x = 781,671.67

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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.