Finding the Fourth Proportional to 6,940,955.30, 9,578,451.73 and 3,999,691.80
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Solution
The fourth proportional to 6,940,955.30, 9,578,451.73 and 3,999,691.80 is: 5,519,536.32
Step by Step Solution
- Step 1: Write the proportion equation
6,940,955.30 : 9,578,451.73 = 3,999,691.80 : x - Step 2: Convert to fraction form
6,940,955.30/9,578,451.73 = 3,999,691.80/x - Step 3: Cross multiply
6,940,955.30x = 9,578,451.73 × 3,999,691.80 - Step 4: Simplify right side
6,940,955.30x = 38,310,854,841,176.81 - Step 5: Solve for x
x = 38,310,854,841,176.81/6,940,955.30 - Step 6: Final answer
x = 5,519,536.32
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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.