Home / 1,909,356.78-2,634,892.39-1,421,507.62

Finding the Fourth Proportional to 1,909,356.78, 2,634,892.39 and 1,421,507.62

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Solution

The fourth proportional to 1,909,356.78, 2,634,892.39 and 1,421,507.62 is: 1,961,665.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,909,356.78 : 2,634,892.39 = 1,421,507.62 : x
  2. Step 2: Convert to fraction form
    1,909,356.78/2,634,892.39 = 1,421,507.62/x
  3. Step 3: Cross multiply
    1,909,356.78x = 2,634,892.39 × 1,421,507.62
  4. Step 4: Simplify right side
    1,909,356.78x = 3,745,519,610,265.01
  5. Step 5: Solve for x
    x = 3,745,519,610,265.01/1,909,356.78
  6. Step 6: Final answer
    x = 1,961,665.65

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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.