Home / 2,189,455.95-3,021,388.62-1,209,377.42

Finding the Fourth Proportional to 2,189,455.95, 3,021,388.62 and 1,209,377.42

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Solution

The fourth proportional to 2,189,455.95, 3,021,388.62 and 1,209,377.42 is: 1,668,907.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,189,455.95 : 3,021,388.62 = 1,209,377.42 : x
  2. Step 2: Convert to fraction form
    2,189,455.95/3,021,388.62 = 1,209,377.42/x
  3. Step 3: Cross multiply
    2,189,455.95x = 3,021,388.62 × 1,209,377.42
  4. Step 4: Simplify right side
    2,189,455.95x = 3,653,999,165,761.06
  5. Step 5: Solve for x
    x = 3,653,999,165,761.06/2,189,455.95
  6. Step 6: Final answer
    x = 1,668,907.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.