Home / 1,286,771.42-1,928,901.96-612,671.60

Finding the Fourth Proportional to 1,286,771.42, 1,928,901.96 and 612,671.60

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Solution

The fourth proportional to 1,286,771.42, 1,928,901.96 and 612,671.60 is: 918,409.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286,771.42 : 1,928,901.96 = 612,671.60 : x
  2. Step 2: Convert to fraction form
    1,286,771.42/1,928,901.96 = 612,671.60/x
  3. Step 3: Cross multiply
    1,286,771.42x = 1,928,901.96 × 612,671.60
  4. Step 4: Simplify right side
    1,286,771.42x = 1,181,783,440,431.83
  5. Step 5: Solve for x
    x = 1,181,783,440,431.83/1,286,771.42
  6. Step 6: Final answer
    x = 918,409.77

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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.