Finding the Fourth Proportional to 2,551,823,252.78, 3,828,297,064.86 and 781,207,364.21
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Solution
The fourth proportional to 2,551,823,252.78, 3,828,297,064.86 and 781,207,364.21 is: 1,171,983,152.12
Step by Step Solution
- Step 1: Write the proportion equation
2,551,823,252.78 : 3,828,297,064.86 = 781,207,364.21 : x - Step 2: Convert to fraction form
2,551,823,252.78/3,828,297,064.86 = 781,207,364.21/x - Step 3: Cross multiply
2,551,823,252.78x = 3,828,297,064.86 × 781,207,364.21 - Step 4: Simplify right side
2,551,823,252.78x = 2,990,693,859,433,018,880 - Step 5: Solve for x
x = 2,990,693,859,433,018,880/2,551,823,252.78 - Step 6: Final answer
x = 1,171,983,152.12
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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.