Home / 1,318,887.15-1,978,293.63-420,382.74

Finding the Fourth Proportional to 1,318,887.15, 1,978,293.63 and 420,382.74

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Solution

The fourth proportional to 1,318,887.15, 1,978,293.63 and 420,382.74 is: 630,562.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,887.15 : 1,978,293.63 = 420,382.74 : x
  2. Step 2: Convert to fraction form
    1,318,887.15/1,978,293.63 = 420,382.74/x
  3. Step 3: Cross multiply
    1,318,887.15x = 1,978,293.63 × 420,382.74
  4. Step 4: Simplify right side
    1,318,887.15x = 831,640,496,703.95
  5. Step 5: Solve for x
    x = 831,640,496,703.95/1,318,887.15
  6. Step 6: Final answer
    x = 630,562.29

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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.