Finding the Fourth Proportional to 1,276,517,792.49, 1,912,095,202.20 and 809,939,050.71
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Solution
The fourth proportional to 1,276,517,792.49, 1,912,095,202.20 and 809,939,050.71 is: 1,213,207,196.99
Step by Step Solution
- Step 1: Write the proportion equation
1,276,517,792.49 : 1,912,095,202.20 = 809,939,050.71 : x - Step 2: Convert to fraction form
1,276,517,792.49/1,912,095,202.20 = 809,939,050.71/x - Step 3: Cross multiply
1,276,517,792.49x = 1,912,095,202.20 × 809,939,050.71 - Step 4: Simplify right side
1,276,517,792.49x = 1,548,680,572,937,013,504 - Step 5: Solve for x
x = 1,548,680,572,937,013,504/1,276,517,792.49 - Step 6: Final answer
x = 1,213,207,196.99
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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.