Home / 1,899,188.81-2,619,899.76-1,287,132.26

Finding the Fourth Proportional to 1,899,188.81, 2,619,899.76 and 1,287,132.26

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Solution

The fourth proportional to 1,899,188.81, 2,619,899.76 and 1,287,132.26 is: 1,775,577.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,899,188.81 : 2,619,899.76 = 1,287,132.26 : x
  2. Step 2: Convert to fraction form
    1,899,188.81/2,619,899.76 = 1,287,132.26/x
  3. Step 3: Cross multiply
    1,899,188.81x = 2,619,899.76 × 1,287,132.26
  4. Step 4: Simplify right side
    1,899,188.81x = 3,372,157,485,962.76
  5. Step 5: Solve for x
    x = 3,372,157,485,962.76/1,899,188.81
  6. Step 6: Final answer
    x = 1,775,577.80

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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.