Finding the Fourth Proportional to 1,207,651,812.30, 1,811,477,718.45 and 517,628,817.90
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Solution
The fourth proportional to 1,207,651,812.30, 1,811,477,718.45 and 517,628,817.90 is: 776,443,226.85
Step by Step Solution
- Step 1: Write the proportion equation
1,207,651,812.30 : 1,811,477,718.45 = 517,628,817.90 : x - Step 2: Convert to fraction form
1,207,651,812.30/1,811,477,718.45 = 517,628,817.90/x - Step 3: Cross multiply
1,207,651,812.30x = 1,811,477,718.45 × 517,628,817.90 - Step 4: Simplify right side
1,207,651,812.30x = 937,673,070,053,462,528 - Step 5: Solve for x
x = 937,673,070,053,462,528/1,207,651,812.30 - Step 6: Final answer
x = 776,443,226.85
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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.