Home / 1,212,820.40-1,818,355.80-792,333.20

Finding the Fourth Proportional to 1,212,820.40, 1,818,355.80 and 792,333.20

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Solution

The fourth proportional to 1,212,820.40, 1,818,355.80 and 792,333.20 is: 1,187,928.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,820.40 : 1,818,355.80 = 792,333.20 : x
  2. Step 2: Convert to fraction form
    1,212,820.40/1,818,355.80 = 792,333.20/x
  3. Step 3: Cross multiply
    1,212,820.40x = 1,818,355.80 × 792,333.20
  4. Step 4: Simplify right side
    1,212,820.40x = 1,440,743,669,752.56
  5. Step 5: Solve for x
    x = 1,440,743,669,752.56/1,212,820.40
  6. Step 6: Final answer
    x = 1,187,928.29

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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.