Finding the Fourth Proportional to 388,493,313.80, 582,739,970.70 and 101,278,977.80
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Solution
The fourth proportional to 388,493,313.80, 582,739,970.70 and 101,278,977.80 is: 151,918,466.70
Step by Step Solution
- Step 1: Write the proportion equation
388,493,313.80 : 582,739,970.70 = 101,278,977.80 : x - Step 2: Convert to fraction form
388,493,313.80/582,739,970.70 = 101,278,977.80/x - Step 3: Cross multiply
388,493,313.80x = 582,739,970.70 × 101,278,977.80 - Step 4: Simplify right side
388,493,313.80x = 59,019,308,555,697,952 - Step 5: Solve for x
x = 59,019,308,555,697,952/388,493,313.80 - Step 6: Final answer
x = 151,918,466.70
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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.