Home / 818,811.40-1,228,389.90-257,902.60

Finding the Fourth Proportional to 818,811.40, 1,228,389.90 and 257,902.60

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Solution

The fourth proportional to 818,811.40, 1,228,389.90 and 257,902.60 is: 386,908.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,811.40 : 1,228,389.90 = 257,902.60 : x
  2. Step 2: Convert to fraction form
    818,811.40/1,228,389.90 = 257,902.60/x
  3. Step 3: Cross multiply
    818,811.40x = 1,228,389.90 × 257,902.60
  4. Step 4: Simplify right side
    818,811.40x = 316,804,949,023.74
  5. Step 5: Solve for x
    x = 316,804,949,023.74/818,811.40
  6. Step 6: Final answer
    x = 386,908.33

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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.