Finding the Fourth Proportional to 389,688,042.62, 537,765,213.06 and 211,067,487.12
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Solution
The fourth proportional to 389,688,042.62, 537,765,213.06 and 211,067,487.12 is: 291,270,810.92
Step by Step Solution
- Step 1: Write the proportion equation
389,688,042.62 : 537,765,213.06 = 211,067,487.12 : x - Step 2: Convert to fraction form
389,688,042.62/537,765,213.06 = 211,067,487.12/x - Step 3: Cross multiply
389,688,042.62x = 537,765,213.06 × 211,067,487.12 - Step 4: Simplify right side
389,688,042.62x = 113,504,752,181,125,600 - Step 5: Solve for x
x = 113,504,752,181,125,600/389,688,042.62 - Step 6: Final answer
x = 291,270,810.92
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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.