Home / 1,394,121.40-2,088,417.30-831,484.60

Finding the Fourth Proportional to 1,394,121.40, 2,088,417.30 and 831,484.60

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Solution

The fourth proportional to 1,394,121.40, 2,088,417.30 and 831,484.60 is: 1,245,577.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,394,121.40 : 2,088,417.30 = 831,484.60 : x
  2. Step 2: Convert to fraction form
    1,394,121.40/2,088,417.30 = 831,484.60/x
  3. Step 3: Cross multiply
    1,394,121.40x = 2,088,417.30 × 831,484.60
  4. Step 4: Simplify right side
    1,394,121.40x = 1,736,486,823,323.58
  5. Step 5: Solve for x
    x = 1,736,486,823,323.58/1,394,121.40
  6. Step 6: Final answer
    x = 1,245,577.91

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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.