Finding the Fourth Proportional to 996,432,136.20, 1,494,648,204.30 and 720,933,121.80
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Solution
The fourth proportional to 996,432,136.20, 1,494,648,204.30 and 720,933,121.80 is: 1,081,399,682.70
Step by Step Solution
- Step 1: Write the proportion equation
996,432,136.20 : 1,494,648,204.30 = 720,933,121.80 : x - Step 2: Convert to fraction form
996,432,136.20/1,494,648,204.30 = 720,933,121.80/x - Step 3: Cross multiply
996,432,136.20x = 1,494,648,204.30 × 720,933,121.80 - Step 4: Simplify right side
996,432,136.20x = 1,077,541,395,918,763,136 - Step 5: Solve for x
x = 1,077,541,395,918,763,136/996,432,136.20 - Step 6: Final answer
x = 1,081,399,682.70
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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.