Finding the Fourth Proportional to 1,319,372,328.80, 1,819,897,138.67 and 810,512,366.24
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Solution
The fourth proportional to 1,319,372,328.80, 1,819,897,138.67 and 810,512,366.24 is: 1,117,993,081.99
Step by Step Solution
- Step 1: Write the proportion equation
1,319,372,328.80 : 1,819,897,138.67 = 810,512,366.24 : x - Step 2: Convert to fraction form
1,319,372,328.80/1,819,897,138.67 = 810,512,366.24/x - Step 3: Cross multiply
1,319,372,328.80x = 1,819,897,138.67 × 810,512,366.24 - Step 4: Simplify right side
1,319,372,328.80x = 1,475,049,136,163,675,136 - Step 5: Solve for x
x = 1,475,049,136,163,675,136/1,319,372,328.80 - Step 6: Final answer
x = 1,117,993,081.99
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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.