Home / 990,936.60-1,486,404.90-280,987.80

Finding the Fourth Proportional to 990,936.60, 1,486,404.90 and 280,987.80

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Solution

The fourth proportional to 990,936.60, 1,486,404.90 and 280,987.80 is: 421,481.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,936.60 : 1,486,404.90 = 280,987.80 : x
  2. Step 2: Convert to fraction form
    990,936.60/1,486,404.90 = 280,987.80/x
  3. Step 3: Cross multiply
    990,936.60x = 1,486,404.90 × 280,987.80
  4. Step 4: Simplify right side
    990,936.60x = 417,661,642,760.22
  5. Step 5: Solve for x
    x = 417,661,642,760.22/990,936.60
  6. Step 6: Final answer
    x = 421,481.70

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1.5x scale

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.