Home / 1,990,449.88-2,985,584.10-642,674.68

Finding the Fourth Proportional to 1,990,449.88, 2,985,584.10 and 642,674.68

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Solution

The fourth proportional to 1,990,449.88, 2,985,584.10 and 642,674.68 is: 963,982.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,990,449.88 : 2,985,584.10 = 642,674.68 : x
  2. Step 2: Convert to fraction form
    1,990,449.88/2,985,584.10 = 642,674.68/x
  3. Step 3: Cross multiply
    1,990,449.88x = 2,985,584.10 × 642,674.68
  4. Step 4: Simplify right side
    1,990,449.88x = 1,918,759,306,080.59
  5. Step 5: Solve for x
    x = 1,918,759,306,080.59/1,990,449.88
  6. Step 6: Final answer
    x = 963,982.73

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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.