Finding the Fourth Proportional to 6,638,112,220.40, 9,957,672,215.40 and 1,979,622,594.80
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Solution
The fourth proportional to 6,638,112,220.40, 9,957,672,215.40 and 1,979,622,594.80 is: 2,969,584,161.09
Step by Step Solution
- Step 1: Write the proportion equation
6,638,112,220.40 : 9,957,672,215.40 = 1,979,622,594.80 : x - Step 2: Convert to fraction form
6,638,112,220.40/9,957,672,215.40 = 1,979,622,594.80/x - Step 3: Cross multiply
6,638,112,220.40x = 9,957,672,215.40 × 1,979,622,594.80 - Step 4: Simplify right side
6,638,112,220.40x = 19,712,432,909,218,013,184 - Step 5: Solve for x
x = 19,712,432,909,218,013,184/6,638,112,220.40 - Step 6: Final answer
x = 2,969,584,161.09
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1.5x scale
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.