Home / 990,185.86-1,485,357.27-280,218.34

Finding the Fourth Proportional to 990,185.86, 1,485,357.27 and 280,218.34

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Solution

The fourth proportional to 990,185.86, 1,485,357.27 and 280,218.34 is: 420,349.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,185.86 : 1,485,357.27 = 280,218.34 : x
  2. Step 2: Convert to fraction form
    990,185.86/1,485,357.27 = 280,218.34/x
  3. Step 3: Cross multiply
    990,185.86x = 1,485,357.27 × 280,218.34
  4. Step 4: Simplify right side
    990,185.86x = 416,224,348,506.33
  5. Step 5: Solve for x
    x = 416,224,348,506.33/990,185.86
  6. Step 6: Final answer
    x = 420,349.72

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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.