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Finding the Fourth Proportional to 490,794.88, 677,020.33 and 294,510.59

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Solution

The fourth proportional to 490,794.88, 677,020.33 and 294,510.59 is: 406,258.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,794.88 : 677,020.33 = 294,510.59 : x
  2. Step 2: Convert to fraction form
    490,794.88/677,020.33 = 294,510.59/x
  3. Step 3: Cross multiply
    490,794.88x = 677,020.33 × 294,510.59
  4. Step 4: Simplify right side
    490,794.88x = 199,389,656,830.30
  5. Step 5: Solve for x
    x = 199,389,656,830.30/490,794.88
  6. Step 6: Final answer
    x = 406,258.64

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.