Home / 1,321,336.73-1,982,300.43-422,832.40

Finding the Fourth Proportional to 1,321,336.73, 1,982,300.43 and 422,832.40

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Solution

The fourth proportional to 1,321,336.73, 1,982,300.43 and 422,832.40 is: 634,343.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,321,336.73 : 1,982,300.43 = 422,832.40 : x
  2. Step 2: Convert to fraction form
    1,321,336.73/1,982,300.43 = 422,832.40/x
  3. Step 3: Cross multiply
    1,321,336.73x = 1,982,300.43 × 422,832.40
  4. Step 4: Simplify right side
    1,321,336.73x = 838,180,848,337.93
  5. Step 5: Solve for x
    x = 838,180,848,337.93/1,321,336.73
  6. Step 6: Final answer
    x = 634,343.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.