Home / 818,270.40-1,228,672.80-445,022.40

Finding the Fourth Proportional to 818,270.40, 1,228,672.80 and 445,022.40

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Solution

The fourth proportional to 818,270.40, 1,228,672.80 and 445,022.40 is: 668,222.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,270.40 : 1,228,672.80 = 445,022.40 : x
  2. Step 2: Convert to fraction form
    818,270.40/1,228,672.80 = 445,022.40/x
  3. Step 3: Cross multiply
    818,270.40x = 1,228,672.80 × 445,022.40
  4. Step 4: Simplify right side
    818,270.40x = 546,786,918,270.72
  5. Step 5: Solve for x
    x = 546,786,918,270.72/818,270.40
  6. Step 6: Final answer
    x = 668,222.78

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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.