Home / 1,131,102.20-1,696,070.10-420,764.60

Finding the Fourth Proportional to 1,131,102.20, 1,696,070.10 and 420,764.60

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Solution

The fourth proportional to 1,131,102.20, 1,696,070.10 and 420,764.60 is: 630,929.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,131,102.20 : 1,696,070.10 = 420,764.60 : x
  2. Step 2: Convert to fraction form
    1,131,102.20/1,696,070.10 = 420,764.60/x
  3. Step 3: Cross multiply
    1,131,102.20x = 1,696,070.10 × 420,764.60
  4. Step 4: Simplify right side
    1,131,102.20x = 713,646,257,198.46
  5. Step 5: Solve for x
    x = 713,646,257,198.46/1,131,102.20
  6. Step 6: Final answer
    x = 630,929.95

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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.