Finding the Fourth Proportional to 1,186,392,951.36, 1,778,343,694.02 and 399,173,321.70
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Solution
The fourth proportional to 1,186,392,951.36, 1,778,343,694.02 and 399,173,321.70 is: 598,340,843.69
Step by Step Solution
- Step 1: Write the proportion equation
1,186,392,951.36 : 1,778,343,694.02 = 399,173,321.70 : x - Step 2: Convert to fraction form
1,186,392,951.36/1,778,343,694.02 = 399,173,321.70/x - Step 3: Cross multiply
1,186,392,951.36x = 1,778,343,694.02 × 399,173,321.70 - Step 4: Simplify right side
1,186,392,951.36x = 709,867,359,466,211,840 - Step 5: Solve for x
x = 709,867,359,466,211,840/1,186,392,951.36 - Step 6: Final answer
x = 598,340,843.69
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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.