Home / 818,880.40-1,229,587.80-445,632.40

Finding the Fourth Proportional to 818,880.40, 1,229,587.80 and 445,632.40

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Solution

The fourth proportional to 818,880.40, 1,229,587.80 and 445,632.40 is: 669,138.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,880.40 : 1,229,587.80 = 445,632.40 : x
  2. Step 2: Convert to fraction form
    818,880.40/1,229,587.80 = 445,632.40/x
  3. Step 3: Cross multiply
    818,880.40x = 1,229,587.80 × 445,632.40
  4. Step 4: Simplify right side
    818,880.40x = 547,944,162,324.72
  5. Step 5: Solve for x
    x = 547,944,162,324.72/818,880.40
  6. Step 6: Final answer
    x = 669,138.21

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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.