Home / 818,008.79-1,227,078.80-285,518.03

Finding the Fourth Proportional to 818,008.79, 1,227,078.80 and 285,518.03

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Solution

The fourth proportional to 818,008.79, 1,227,078.80 and 285,518.03 is: 428,299.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,008.79 : 1,227,078.80 = 285,518.03 : x
  2. Step 2: Convert to fraction form
    818,008.79/1,227,078.80 = 285,518.03/x
  3. Step 3: Cross multiply
    818,008.79x = 1,227,078.80 × 285,518.03
  4. Step 4: Simplify right side
    818,008.79x = 350,353,121,630.76
  5. Step 5: Solve for x
    x = 350,353,121,630.76/818,008.79
  6. Step 6: Final answer
    x = 428,299.95

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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.