Home / 818,578.60-1,228,002.30-257,477.80

Finding the Fourth Proportional to 818,578.60, 1,228,002.30 and 257,477.80

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Solution

The fourth proportional to 818,578.60, 1,228,002.30 and 257,477.80 is: 386,258.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,578.60 : 1,228,002.30 = 257,477.80 : x
  2. Step 2: Convert to fraction form
    818,578.60/1,228,002.30 = 257,477.80/x
  3. Step 3: Cross multiply
    818,578.60x = 1,228,002.30 × 257,477.80
  4. Step 4: Simplify right side
    818,578.60x = 316,183,330,598.94
  5. Step 5: Solve for x
    x = 316,183,330,598.94/818,578.60
  6. Step 6: Final answer
    x = 386,258.97

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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.