Home / 1,220,168.40-1,683,933.24-676,474.80

Finding the Fourth Proportional to 1,220,168.40, 1,683,933.24 and 676,474.80

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Solution

The fourth proportional to 1,220,168.40, 1,683,933.24 and 676,474.80 is: 933,591.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220,168.40 : 1,683,933.24 = 676,474.80 : x
  2. Step 2: Convert to fraction form
    1,220,168.40/1,683,933.24 = 676,474.80/x
  3. Step 3: Cross multiply
    1,220,168.40x = 1,683,933.24 × 676,474.80
  4. Step 4: Simplify right side
    1,220,168.40x = 1,139,138,401,742.35
  5. Step 5: Solve for x
    x = 1,139,138,401,742.35/1,220,168.40
  6. Step 6: Final answer
    x = 933,591.14

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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.