Home / 1,318,719.02-1,978,376.88-420,211.94

Finding the Fourth Proportional to 1,318,719.02, 1,978,376.88 and 420,211.94

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Solution

The fourth proportional to 1,318,719.02, 1,978,376.88 and 420,211.94 is: 630,412.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,719.02 : 1,978,376.88 = 420,211.94 : x
  2. Step 2: Convert to fraction form
    1,318,719.02/1,978,376.88 = 420,211.94/x
  3. Step 3: Cross multiply
    1,318,719.02x = 1,978,376.88 × 420,211.94
  4. Step 4: Simplify right side
    1,318,719.02x = 831,337,586,795.95
  5. Step 5: Solve for x
    x = 831,337,586,795.95/1,318,719.02
  6. Step 6: Final answer
    x = 630,412.98

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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.