Finding the Fourth Proportional to 673,792,305.12, 929,839,791.60 and 395,338,566.24
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Solution
The fourth proportional to 673,792,305.12, 929,839,791.60 and 395,338,566.24 is: 545,570,982.71
Step by Step Solution
- Step 1: Write the proportion equation
673,792,305.12 : 929,839,791.60 = 395,338,566.24 : x - Step 2: Convert to fraction form
673,792,305.12/929,839,791.60 = 395,338,566.24/x - Step 3: Cross multiply
673,792,305.12x = 929,839,791.60 × 395,338,566.24 - Step 4: Simplify right side
673,792,305.12x = 367,601,530,044,044,416 - Step 5: Solve for x
x = 367,601,530,044,044,416/673,792,305.12 - Step 6: Final answer
x = 545,570,982.71
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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.