Home / 1,318,896.80-1,977,311.69-520,775.75

Finding the Fourth Proportional to 1,318,896.80, 1,977,311.69 and 520,775.75

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Solution

The fourth proportional to 1,318,896.80, 1,977,311.69 and 520,775.75 is: 780,755.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,896.80 : 1,977,311.69 = 520,775.75 : x
  2. Step 2: Convert to fraction form
    1,318,896.80/1,977,311.69 = 520,775.75/x
  3. Step 3: Cross multiply
    1,318,896.80x = 1,977,311.69 × 520,775.75
  4. Step 4: Simplify right side
    1,318,896.80x = 1,029,735,977,881.38
  5. Step 5: Solve for x
    x = 1,029,735,977,881.38/1,318,896.80
  6. Step 6: Final answer
    x = 780,755.54

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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.