Home / 1,318,917.60-1,978,894.80-520,063.20

Finding the Fourth Proportional to 1,318,917.60, 1,978,894.80 and 520,063.20

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Solution

The fourth proportional to 1,318,917.60, 1,978,894.80 and 520,063.20 is: 780,299.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,917.60 : 1,978,894.80 = 520,063.20 : x
  2. Step 2: Convert to fraction form
    1,318,917.60/1,978,894.80 = 520,063.20/x
  3. Step 3: Cross multiply
    1,318,917.60x = 1,978,894.80 × 520,063.20
  4. Step 4: Simplify right side
    1,318,917.60x = 1,029,150,362,151.36
  5. Step 5: Solve for x
    x = 1,029,150,362,151.36/1,318,917.60
  6. Step 6: Final answer
    x = 780,299.21

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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.