Home / 818,615.37-1,228,089.14-257,519.37

Finding the Fourth Proportional to 818,615.37, 1,228,089.14 and 257,519.37

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Solution

The fourth proportional to 818,615.37, 1,228,089.14 and 257,519.37 is: 386,331.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,615.37 : 1,228,089.14 = 257,519.37 : x
  2. Step 2: Convert to fraction form
    818,615.37/1,228,089.14 = 257,519.37/x
  3. Step 3: Cross multiply
    818,615.37x = 1,228,089.14 × 257,519.37
  4. Step 4: Simplify right side
    818,615.37x = 316,256,740,349.05
  5. Step 5: Solve for x
    x = 316,256,740,349.05/818,615.37
  6. Step 6: Final answer
    x = 386,331.30

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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.