Home / 1,272,775.80-1,912,662.90-1,189,553.16

Finding the Fourth Proportional to 1,272,775.80, 1,912,662.90 and 1,189,553.16

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Solution

The fourth proportional to 1,272,775.80, 1,912,662.90 and 1,189,553.16 is: 1,787,600.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272,775.80 : 1,912,662.90 = 1,189,553.16 : x
  2. Step 2: Convert to fraction form
    1,272,775.80/1,912,662.90 = 1,189,553.16/x
  3. Step 3: Cross multiply
    1,272,775.80x = 1,912,662.90 × 1,189,553.16
  4. Step 4: Simplify right side
    1,272,775.80x = 2,275,214,196,709.76
  5. Step 5: Solve for x
    x = 2,275,214,196,709.76/1,272,775.80
  6. Step 6: Final answer
    x = 1,787,600.14

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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.