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Finding the Fourth Proportional to 1,990,862, 2,986,303.98 and 494,954

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Solution

The fourth proportional to 1,990,862, 2,986,303.98 and 494,954 is: 742,433.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,990,862 : 2,986,303.98 = 494,954 : x
  2. Step 2: Convert to fraction form
    1,990,862/2,986,303.98 = 494,954/x
  3. Step 3: Cross multiply
    1,990,862x = 2,986,303.98 × 494,954
  4. Step 4: Simplify right side
    1,990,862x = 1,478,083,100,116.92
  5. Step 5: Solve for x
    x = 1,478,083,100,116.92/1,990,862
  6. Step 6: Final answer
    x = 742,433.73

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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.