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Finding the Fourth Proportional to 997,000.20, 1,494,479.70 and 490,782.60

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Solution

The fourth proportional to 997,000.20, 1,494,479.70 and 490,782.60 is: 735,671.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    997,000.20 : 1,494,479.70 = 490,782.60 : x
  2. Step 2: Convert to fraction form
    997,000.20/1,494,479.70 = 490,782.60/x
  3. Step 3: Cross multiply
    997,000.20x = 1,494,479.70 × 490,782.60
  4. Step 4: Simplify right side
    997,000.20x = 733,464,632,813.22
  5. Step 5: Solve for x
    x = 733,464,632,813.22/997,000.20
  6. Step 6: Final answer
    x = 735,671.50

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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.