Home / 1,221,376.03-1,831,178.30-821,023.81

Finding the Fourth Proportional to 1,221,376.03, 1,831,178.30 and 821,023.81

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Solution

The fourth proportional to 1,221,376.03, 1,831,178.30 and 821,023.81 is: 1,230,940.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,376.03 : 1,831,178.30 = 821,023.81 : x
  2. Step 2: Convert to fraction form
    1,221,376.03/1,831,178.30 = 821,023.81/x
  3. Step 3: Cross multiply
    1,221,376.03x = 1,831,178.30 × 821,023.81
  4. Step 4: Simplify right side
    1,221,376.03x = 1,503,440,984,655.32
  5. Step 5: Solve for x
    x = 1,503,440,984,655.32/1,221,376.03
  6. Step 6: Final answer
    x = 1,230,940.31

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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.