Home / 1,420,964.40-2,136,695.40-1,190,017.20

Finding the Fourth Proportional to 1,420,964.40, 2,136,695.40 and 1,190,017.20

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Solution

The fourth proportional to 1,420,964.40, 2,136,695.40 and 1,190,017.20 is: 1,789,421.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,964.40 : 2,136,695.40 = 1,190,017.20 : x
  2. Step 2: Convert to fraction form
    1,420,964.40/2,136,695.40 = 1,190,017.20/x
  3. Step 3: Cross multiply
    1,420,964.40x = 2,136,695.40 × 1,190,017.20
  4. Step 4: Simplify right side
    1,420,964.40x = 2,542,704,277,160.88
  5. Step 5: Solve for x
    x = 2,542,704,277,160.88/1,420,964.40
  6. Step 6: Final answer
    x = 1,789,421.52

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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.