Finding the Fourth Proportional to 715,789,222.08, 987,673,894.74 and 402,504,757.44
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Solution
The fourth proportional to 715,789,222.08, 987,673,894.74 and 402,504,757.44 is: 555,391,767.81
Step by Step Solution
- Step 1: Write the proportion equation
715,789,222.08 : 987,673,894.74 = 402,504,757.44 : x - Step 2: Convert to fraction form
715,789,222.08/987,673,894.74 = 402,504,757.44/x - Step 3: Cross multiply
715,789,222.08x = 987,673,894.74 × 402,504,757.44 - Step 4: Simplify right side
715,789,222.08x = 397,543,441,432,143,808 - Step 5: Solve for x
x = 397,543,441,432,143,808/715,789,222.08 - Step 6: Final answer
x = 555,391,767.81
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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.