Finding the Fourth Proportional to 660,769,607.20, 991,154,410.80 and 553,274,183.20
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Solution
The fourth proportional to 660,769,607.20, 991,154,410.80 and 553,274,183.20 is: 829,911,274.80
Step by Step Solution
- Step 1: Write the proportion equation
660,769,607.20 : 991,154,410.80 = 553,274,183.20 : x - Step 2: Convert to fraction form
660,769,607.20/991,154,410.80 = 553,274,183.20/x - Step 3: Cross multiply
660,769,607.20x = 991,154,410.80 × 553,274,183.20 - Step 4: Simplify right side
660,769,607.20x = 548,380,147,060,447,296 - Step 5: Solve for x
x = 548,380,147,060,447,296/660,769,607.20 - Step 6: Final answer
x = 829,911,274.80
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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.