Home / 1,318,918.60-1,978,896.30-520,064.20

Finding the Fourth Proportional to 1,318,918.60, 1,978,896.30 and 520,064.20

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Solution

The fourth proportional to 1,318,918.60, 1,978,896.30 and 520,064.20 is: 780,300.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,918.60 : 1,978,896.30 = 520,064.20 : x
  2. Step 2: Convert to fraction form
    1,318,918.60/1,978,896.30 = 520,064.20/x
  3. Step 3: Cross multiply
    1,318,918.60x = 1,978,896.30 × 520,064.20
  4. Step 4: Simplify right side
    1,318,918.60x = 1,029,153,121,142.46
  5. Step 5: Solve for x
    x = 1,029,153,121,142.46/1,318,918.60
  6. Step 6: Final answer
    x = 780,300.71

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