Home / 1,259,938.80-1,889,908.20-691,100.10

Finding the Fourth Proportional to 1,259,938.80, 1,889,908.20 and 691,100.10

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Solution

The fourth proportional to 1,259,938.80, 1,889,908.20 and 691,100.10 is: 1,036,650.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,259,938.80 : 1,889,908.20 = 691,100.10 : x
  2. Step 2: Convert to fraction form
    1,259,938.80/1,889,908.20 = 691,100.10/x
  3. Step 3: Cross multiply
    1,259,938.80x = 1,889,908.20 × 691,100.10
  4. Step 4: Simplify right side
    1,259,938.80x = 1,306,115,746,010.82
  5. Step 5: Solve for x
    x = 1,306,115,746,010.82/1,259,938.80
  6. Step 6: Final answer
    x = 1,036,650.15

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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.