Home / 1,318,816.40-1,978,203.14-420,246.01

Finding the Fourth Proportional to 1,318,816.40, 1,978,203.14 and 420,246.01

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Solution

The fourth proportional to 1,318,816.40, 1,978,203.14 and 420,246.01 is: 630,362.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,816.40 : 1,978,203.14 = 420,246.01 : x
  2. Step 2: Convert to fraction form
    1,318,816.40/1,978,203.14 = 420,246.01/x
  3. Step 3: Cross multiply
    1,318,816.40x = 1,978,203.14 × 420,246.01
  4. Step 4: Simplify right side
    1,318,816.40x = 831,331,964,562.23
  5. Step 5: Solve for x
    x = 831,331,964,562.23/1,318,816.40
  6. Step 6: Final answer
    x = 630,362.17

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Why These Related Problems?

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