Finding the Fourth Proportional to 557,379,329.62, 769,205,637.69 and 306,504,289.54
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Solution
The fourth proportional to 557,379,329.62, 769,205,637.69 and 306,504,289.54 is: 422,988,106.95
Step by Step Solution
- Step 1: Write the proportion equation
557,379,329.62 : 769,205,637.69 = 306,504,289.54 : x - Step 2: Convert to fraction form
557,379,329.62/769,205,637.69 = 306,504,289.54/x - Step 3: Cross multiply
557,379,329.62x = 769,205,637.69 × 306,504,289.54 - Step 4: Simplify right side
557,379,329.62x = 235,764,827,490,336,128 - Step 5: Solve for x
x = 235,764,827,490,336,128/557,379,329.62 - Step 6: Final answer
x = 422,988,106.95
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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.