Home / 1,388,512.20-2,082,768.30-489,946.80

Finding the Fourth Proportional to 1,388,512.20, 2,082,768.30 and 489,946.80

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Solution

The fourth proportional to 1,388,512.20, 2,082,768.30 and 489,946.80 is: 734,920.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,512.20 : 2,082,768.30 = 489,946.80 : x
  2. Step 2: Convert to fraction form
    1,388,512.20/2,082,768.30 = 489,946.80/x
  3. Step 3: Cross multiply
    1,388,512.20x = 2,082,768.30 × 489,946.80
  4. Step 4: Simplify right side
    1,388,512.20x = 1,020,445,663,726.44
  5. Step 5: Solve for x
    x = 1,020,445,663,726.44/1,388,512.20
  6. Step 6: Final answer
    x = 734,920.20

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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.