Home / 1,318,724.02-1,978,384.38-420,216.94

Finding the Fourth Proportional to 1,318,724.02, 1,978,384.38 and 420,216.94

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Solution

The fourth proportional to 1,318,724.02, 1,978,384.38 and 420,216.94 is: 630,420.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,724.02 : 1,978,384.38 = 420,216.94 : x
  2. Step 2: Convert to fraction form
    1,318,724.02/1,978,384.38 = 420,216.94/x
  3. Step 3: Cross multiply
    1,318,724.02x = 1,978,384.38 × 420,216.94
  4. Step 4: Simplify right side
    1,318,724.02x = 831,350,630,307.40
  5. Step 5: Solve for x
    x = 831,350,630,307.40/1,318,724.02
  6. Step 6: Final answer
    x = 630,420.48

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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.