Home / 1,318,881.15-1,978,284.65-420,376.73

Finding the Fourth Proportional to 1,318,881.15, 1,978,284.65 and 420,376.73

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Solution

The fourth proportional to 1,318,881.15, 1,978,284.65 and 420,376.73 is: 630,553.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,881.15 : 1,978,284.65 = 420,376.73 : x
  2. Step 2: Convert to fraction form
    1,318,881.15/1,978,284.65 = 420,376.73/x
  3. Step 3: Cross multiply
    1,318,881.15x = 1,978,284.65 × 420,376.73
  4. Step 4: Simplify right side
    1,318,881.15x = 831,624,820,182.89
  5. Step 5: Solve for x
    x = 831,624,820,182.89/1,318,881.15
  6. Step 6: Final answer
    x = 630,553.27

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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.