Home / 828,145.58-1,242,218.50-259,526.48

Finding the Fourth Proportional to 828,145.58, 1,242,218.50 and 259,526.48

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Solution

The fourth proportional to 828,145.58, 1,242,218.50 and 259,526.48 is: 389,289.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,145.58 : 1,242,218.50 = 259,526.48 : x
  2. Step 2: Convert to fraction form
    828,145.58/1,242,218.50 = 259,526.48/x
  3. Step 3: Cross multiply
    828,145.58x = 1,242,218.50 × 259,526.48
  4. Step 4: Simplify right side
    828,145.58x = 322,388,587,835.97
  5. Step 5: Solve for x
    x = 322,388,587,835.97/828,145.58
  6. Step 6: Final answer
    x = 389,289.75

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Double scale
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Similar ratio
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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.