Finding the Fourth Proportional to 579,442,028.70, 869,163,043.05 and 443,393,132.70
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Solution
The fourth proportional to 579,442,028.70, 869,163,043.05 and 443,393,132.70 is: 665,089,699.05
Step by Step Solution
- Step 1: Write the proportion equation
579,442,028.70 : 869,163,043.05 = 443,393,132.70 : x - Step 2: Convert to fraction form
579,442,028.70/869,163,043.05 = 443,393,132.70/x - Step 3: Cross multiply
579,442,028.70x = 869,163,043.05 × 443,393,132.70 - Step 4: Simplify right side
579,442,028.70x = 385,380,924,485,004,416 - Step 5: Solve for x
x = 385,380,924,485,004,416/579,442,028.70 - Step 6: Final answer
x = 665,089,699.05
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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.