Home / 693,286.80-1,039,930.20-338,528.40

Finding the Fourth Proportional to 693,286.80, 1,039,930.20 and 338,528.40

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Solution

The fourth proportional to 693,286.80, 1,039,930.20 and 338,528.40 is: 507,792.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,286.80 : 1,039,930.20 = 338,528.40 : x
  2. Step 2: Convert to fraction form
    693,286.80/1,039,930.20 = 338,528.40/x
  3. Step 3: Cross multiply
    693,286.80x = 1,039,930.20 × 338,528.40
  4. Step 4: Simplify right side
    693,286.80x = 352,045,906,717.68
  5. Step 5: Solve for x
    x = 352,045,906,717.68/693,286.80
  6. Step 6: Final answer
    x = 507,792.60

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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.