Home / 1,394,120.40-2,088,415.80-831,483.60

Finding the Fourth Proportional to 1,394,120.40, 2,088,415.80 and 831,483.60

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Solution

The fourth proportional to 1,394,120.40, 2,088,415.80 and 831,483.60 is: 1,245,576.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,394,120.40 : 2,088,415.80 = 831,483.60 : x
  2. Step 2: Convert to fraction form
    1,394,120.40/2,088,415.80 = 831,483.60/x
  3. Step 3: Cross multiply
    1,394,120.40x = 2,088,415.80 × 831,483.60
  4. Step 4: Simplify right side
    1,394,120.40x = 1,736,483,487,680.88
  5. Step 5: Solve for x
    x = 1,736,483,487,680.88/1,394,120.40
  6. Step 6: Final answer
    x = 1,245,576.41

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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.