Finding the Fourth Proportional to 1,227,205,460.74, 1,693,548,707.88 and 691,363,555.18
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Solution
The fourth proportional to 1,227,205,460.74, 1,693,548,707.88 and 691,363,555.18 is: 954,084,619.90
Step by Step Solution
- Step 1: Write the proportion equation
1,227,205,460.74 : 1,693,548,707.88 = 691,363,555.18 : x - Step 2: Convert to fraction form
1,227,205,460.74/1,693,548,707.88 = 691,363,555.18/x - Step 3: Cross multiply
1,227,205,460.74x = 1,693,548,707.88 × 691,363,555.18 - Step 4: Simplify right side
1,227,205,460.74x = 1,170,857,855,550,412,032 - Step 5: Solve for x
x = 1,170,857,855,550,412,032/1,227,205,460.74 - Step 6: Final answer
x = 954,084,619.90
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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.