Finding the Fourth Proportional to 1,197,288,987.71, 1,640,258,512.62 and 1,152,524,974.17
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Solution
The fourth proportional to 1,197,288,987.71, 1,640,258,512.62 and 1,152,524,974.17 is: 1,578,932,838.51
Step by Step Solution
- Step 1: Write the proportion equation
1,197,288,987.71 : 1,640,258,512.62 = 1,152,524,974.17 : x - Step 2: Convert to fraction form
1,197,288,987.71/1,640,258,512.62 = 1,152,524,974.17/x - Step 3: Cross multiply
1,197,288,987.71x = 1,640,258,512.62 × 1,152,524,974.17 - Step 4: Simplify right side
1,197,288,987.71x = 1,890,438,899,889,488,128 - Step 5: Solve for x
x = 1,890,438,899,889,488,128/1,197,288,987.71 - Step 6: Final answer
x = 1,578,932,838.51
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Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.