Home / 1,318,603.84-1,977,251.34-419,928.40

Finding the Fourth Proportional to 1,318,603.84, 1,977,251.34 and 419,928.40

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Solution

The fourth proportional to 1,318,603.84, 1,977,251.34 and 419,928.40 is: 629,684.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,603.84 : 1,977,251.34 = 419,928.40 : x
  2. Step 2: Convert to fraction form
    1,318,603.84/1,977,251.34 = 419,928.40/x
  3. Step 3: Cross multiply
    1,318,603.84x = 1,977,251.34 × 419,928.40
  4. Step 4: Simplify right side
    1,318,603.84x = 830,303,991,604.06
  5. Step 5: Solve for x
    x = 830,303,991,604.06/1,318,603.84
  6. Step 6: Final answer
    x = 629,684.19

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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.