Finding the Fourth Proportional to 1,573,431,411.86, 2,171,324,302.51 and 858,966,965.09
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Solution
The fourth proportional to 1,573,431,411.86, 2,171,324,302.51 and 858,966,965.09 is: 1,185,368,381.68
Step by Step Solution
- Step 1: Write the proportion equation
1,573,431,411.86 : 2,171,324,302.51 = 858,966,965.09 : x - Step 2: Convert to fraction form
1,573,431,411.86/2,171,324,302.51 = 858,966,965.09/x - Step 3: Cross multiply
1,573,431,411.86x = 2,171,324,302.51 × 858,966,965.09 - Step 4: Simplify right side
1,573,431,411.86x = 1,865,095,846,352,382,720 - Step 5: Solve for x
x = 1,865,095,846,352,382,720/1,573,431,411.86 - Step 6: Final answer
x = 1,185,368,381.68
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1.5x scale
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.