Finding the Fourth Proportional to 378,042,578.44, 521,695,669.62 and 210,776,852.68
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Solution
The fourth proportional to 378,042,578.44, 521,695,669.62 and 210,776,852.68 is: 290,870,334.64
Step by Step Solution
- Step 1: Write the proportion equation
378,042,578.44 : 521,695,669.62 = 210,776,852.68 : x - Step 2: Convert to fraction form
378,042,578.44/521,695,669.62 = 210,776,852.68/x - Step 3: Cross multiply
378,042,578.44x = 521,695,669.62 × 210,776,852.68 - Step 4: Simplify right side
378,042,578.44x = 109,961,371,299,288,704 - Step 5: Solve for x
x = 109,961,371,299,288,704/378,042,578.44 - Step 6: Final answer
x = 290,870,334.64
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.