Home / 1,318,875.40-1,978,276.04-420,370.95

Finding the Fourth Proportional to 1,318,875.40, 1,978,276.04 and 420,370.95

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Solution

The fourth proportional to 1,318,875.40, 1,978,276.04 and 420,370.95 is: 630,544.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,875.40 : 1,978,276.04 = 420,370.95 : x
  2. Step 2: Convert to fraction form
    1,318,875.40/1,978,276.04 = 420,370.95/x
  3. Step 3: Cross multiply
    1,318,875.40x = 1,978,276.04 × 420,370.95
  4. Step 4: Simplify right side
    1,318,875.40x = 831,609,778,297.04
  5. Step 5: Solve for x
    x = 831,609,778,297.04/1,318,875.40
  6. Step 6: Final answer
    x = 630,544.61

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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.