Finding the Fourth Proportional to 750,144,018.75, 1,035,198,745.88 and 420,119,157.75
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Solution
The fourth proportional to 750,144,018.75, 1,035,198,745.88 and 420,119,157.75 is: 579,764,437.70
Step by Step Solution
- Step 1: Write the proportion equation
750,144,018.75 : 1,035,198,745.88 = 420,119,157.75 : x - Step 2: Convert to fraction form
750,144,018.75/1,035,198,745.88 = 420,119,157.75/x - Step 3: Cross multiply
750,144,018.75x = 1,035,198,745.88 × 420,119,157.75 - Step 4: Simplify right side
750,144,018.75x = 434,906,825,220,861,312 - Step 5: Solve for x
x = 434,906,825,220,861,312/750,144,018.75 - Step 6: Final answer
x = 579,764,437.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.