Home / 1,326,232.11-1,989,736.35-427,655.78

Finding the Fourth Proportional to 1,326,232.11, 1,989,736.35 and 427,655.78

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Solution

The fourth proportional to 1,326,232.11, 1,989,736.35 and 427,655.78 is: 641,608.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,326,232.11 : 1,989,736.35 = 427,655.78 : x
  2. Step 2: Convert to fraction form
    1,326,232.11/1,989,736.35 = 427,655.78/x
  3. Step 3: Cross multiply
    1,326,232.11x = 1,989,736.35 × 427,655.78
  4. Step 4: Simplify right side
    1,326,232.11x = 850,922,240,804.92
  5. Step 5: Solve for x
    x = 850,922,240,804.92/1,326,232.11
  6. Step 6: Final answer
    x = 641,608.84

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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.