Home / 1,231,206.40-1,845,427.20-521,113.60

Finding the Fourth Proportional to 1,231,206.40, 1,845,427.20 and 521,113.60

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Solution

The fourth proportional to 1,231,206.40, 1,845,427.20 and 521,113.60 is: 781,085.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,206.40 : 1,845,427.20 = 521,113.60 : x
  2. Step 2: Convert to fraction form
    1,231,206.40/1,845,427.20 = 521,113.60/x
  3. Step 3: Cross multiply
    1,231,206.40x = 1,845,427.20 × 521,113.60
  4. Step 4: Simplify right side
    1,231,206.40x = 961,677,211,729.92
  5. Step 5: Solve for x
    x = 961,677,211,729.92/1,231,206.40
  6. Step 6: Final answer
    x = 781,085.29

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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.