Home / 1,993,142.63-2,990,190.13-645,306.68

Finding the Fourth Proportional to 1,993,142.63, 2,990,190.13 and 645,306.68

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Solution

The fourth proportional to 1,993,142.63, 2,990,190.13 and 645,306.68 is: 968,114.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,993,142.63 : 2,990,190.13 = 645,306.68 : x
  2. Step 2: Convert to fraction form
    1,993,142.63/2,990,190.13 = 645,306.68/x
  3. Step 3: Cross multiply
    1,993,142.63x = 2,990,190.13 × 645,306.68
  4. Step 4: Simplify right side
    1,993,142.63x = 1,929,589,671,221.28
  5. Step 5: Solve for x
    x = 1,929,589,671,221.28/1,993,142.63
  6. Step 6: Final answer
    x = 968,114.19

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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.