Home / 1,943,129.80-2,912,556.30-680,307.40

Finding the Fourth Proportional to 1,943,129.80, 2,912,556.30 and 680,307.40

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Solution

The fourth proportional to 1,943,129.80, 2,912,556.30 and 680,307.40 is: 1,019,712.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,943,129.80 : 2,912,556.30 = 680,307.40 : x
  2. Step 2: Convert to fraction form
    1,943,129.80/2,912,556.30 = 680,307.40/x
  3. Step 3: Cross multiply
    1,943,129.80x = 2,912,556.30 × 680,307.40
  4. Step 4: Simplify right side
    1,943,129.80x = 1,981,433,603,806.62
  5. Step 5: Solve for x
    x = 1,981,433,603,806.62/1,943,129.80
  6. Step 6: Final answer
    x = 1,019,712.43

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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.