Finding the Fourth Proportional to 465,477,138.49, 642,971,617.29 and 345,019,320.98
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Solution
The fourth proportional to 465,477,138.49, 642,971,617.29 and 345,019,320.98 is: 476,581,151.82
Step by Step Solution
- Step 1: Write the proportion equation
465,477,138.49 : 642,971,617.29 = 345,019,320.98 : x - Step 2: Convert to fraction form
465,477,138.49/642,971,617.29 = 345,019,320.98/x - Step 3: Cross multiply
465,477,138.49x = 642,971,617.29 × 345,019,320.98 - Step 4: Simplify right side
465,477,138.49x = 221,837,630,806,004,480 - Step 5: Solve for x
x = 221,837,630,806,004,480/465,477,138.49 - Step 6: Final answer
x = 476,581,151.82
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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.