Finding the Fourth Proportional to 715,789,171.08, 987,673,824.36 and 402,504,706.44
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Solution
The fourth proportional to 715,789,171.08, 987,673,824.36 and 402,504,706.44 is: 555,391,697.44
Step by Step Solution
- Step 1: Write the proportion equation
715,789,171.08 : 987,673,824.36 = 402,504,706.44 : x - Step 2: Convert to fraction form
715,789,171.08/987,673,824.36 = 402,504,706.44/x - Step 3: Cross multiply
715,789,171.08x = 987,673,824.36 × 402,504,706.44 - Step 4: Simplify right side
715,789,171.08x = 397,543,362,732,493,952 - Step 5: Solve for x
x = 397,543,362,732,493,952/715,789,171.08 - Step 6: Final answer
x = 555,391,697.44
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Double scale
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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.