Home / 1,181,905.92-1,631,036.16-645,361.92

Finding the Fourth Proportional to 1,181,905.92, 1,631,036.16 and 645,361.92

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Solution

The fourth proportional to 1,181,905.92, 1,631,036.16 and 645,361.92 is: 890,602.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,181,905.92 : 1,631,036.16 = 645,361.92 : x
  2. Step 2: Convert to fraction form
    1,181,905.92/1,631,036.16 = 645,361.92/x
  3. Step 3: Cross multiply
    1,181,905.92x = 1,631,036.16 × 645,361.92
  4. Step 4: Simplify right side
    1,181,905.92x = 1,052,608,627,807.03
  5. Step 5: Solve for x
    x = 1,052,608,627,807.03/1,181,905.92
  6. Step 6: Final answer
    x = 890,602.72

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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.