Finding the Fourth Proportional to 892,107,965.97, 1,231,036,816.23 and 515,788,698.15
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Solution
The fourth proportional to 892,107,965.97, 1,231,036,816.23 and 515,788,698.15 is: 711,746,673.09
Step by Step Solution
- Step 1: Write the proportion equation
892,107,965.97 : 1,231,036,816.23 = 515,788,698.15 : x - Step 2: Convert to fraction form
892,107,965.97/1,231,036,816.23 = 515,788,698.15/x - Step 3: Cross multiply
892,107,965.97x = 1,231,036,816.23 × 515,788,698.15 - Step 4: Simplify right side
892,107,965.97x = 634,954,876,817,992,448 - Step 5: Solve for x
x = 634,954,876,817,992,448/892,107,965.97 - Step 6: Final answer
x = 711,746,673.09
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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.