Home / 1,905,921.42-2,631,402.39-1,181,543.28

Finding the Fourth Proportional to 1,905,921.42, 2,631,402.39 and 1,181,543.28

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Solution

The fourth proportional to 1,905,921.42, 2,631,402.39 and 1,181,543.28 is: 1,631,292.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,905,921.42 : 2,631,402.39 = 1,181,543.28 : x
  2. Step 2: Convert to fraction form
    1,905,921.42/2,631,402.39 = 1,181,543.28/x
  3. Step 3: Cross multiply
    1,905,921.42x = 2,631,402.39 × 1,181,543.28
  4. Step 4: Simplify right side
    1,905,921.42x = 3,109,115,810,880.44
  5. Step 5: Solve for x
    x = 3,109,115,810,880.44/1,905,921.42
  6. Step 6: Final answer
    x = 1,631,292.76

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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.