Finding the Fourth Proportional to 691,721,985.36, 954,482,063.67 and 413,204,386.08
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Solution
The fourth proportional to 691,721,985.36, 954,482,063.67 and 413,204,386.08 is: 570,165,736.37
Step by Step Solution
- Step 1: Write the proportion equation
691,721,985.36 : 954,482,063.67 = 413,204,386.08 : x - Step 2: Convert to fraction form
691,721,985.36/954,482,063.67 = 413,204,386.08/x - Step 3: Cross multiply
691,721,985.36x = 954,482,063.67 × 413,204,386.08 - Step 4: Simplify right side
691,721,985.36x = 394,396,175,143,133,760 - Step 5: Solve for x
x = 394,396,175,143,133,760/691,721,985.36 - Step 6: Final answer
x = 570,165,736.37
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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.