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Finding the Fourth Proportional to 868,674.70, 1,303,206.45 and 336,148.30

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Solution

The fourth proportional to 868,674.70, 1,303,206.45 and 336,148.30 is: 504,297.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,674.70 : 1,303,206.45 = 336,148.30 : x
  2. Step 2: Convert to fraction form
    868,674.70/1,303,206.45 = 336,148.30/x
  3. Step 3: Cross multiply
    868,674.70x = 1,303,206.45 × 336,148.30
  4. Step 4: Simplify right side
    868,674.70x = 438,070,632,716.54
  5. Step 5: Solve for x
    x = 438,070,632,716.54/868,674.70
  6. Step 6: Final answer
    x = 504,297.68

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Double scale
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Similar ratio
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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.