Home / 1,317,621-1,976,431.50-419,064.60

Finding the Fourth Proportional to 1,317,621, 1,976,431.50 and 419,064.60

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Solution

The fourth proportional to 1,317,621, 1,976,431.50 and 419,064.60 is: 628,596.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,317,621 : 1,976,431.50 = 419,064.60 : x
  2. Step 2: Convert to fraction form
    1,317,621/1,976,431.50 = 419,064.60/x
  3. Step 3: Cross multiply
    1,317,621x = 1,976,431.50 × 419,064.60
  4. Step 4: Simplify right side
    1,317,621x = 828,252,475,974.90
  5. Step 5: Solve for x
    x = 828,252,475,974.90/1,317,621
  6. Step 6: Final answer
    x = 628,596.90

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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.