Finding the Fourth Proportional to 936,967,396.35, 1,293,015,129.44 and 519,306,645.99
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Solution
The fourth proportional to 936,967,396.35, 1,293,015,129.44 and 519,306,645.99 is: 716,643,239.35
Step by Step Solution
- Step 1: Write the proportion equation
936,967,396.35 : 1,293,015,129.44 = 519,306,645.99 : x - Step 2: Convert to fraction form
936,967,396.35/1,293,015,129.44 = 519,306,645.99/x - Step 3: Cross multiply
936,967,396.35x = 1,293,015,129.44 × 519,306,645.99 - Step 4: Simplify right side
936,967,396.35x = 671,471,350,081,215,616 - Step 5: Solve for x
x = 671,471,350,081,215,616/936,967,396.35 - Step 6: Final answer
x = 716,643,239.35
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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.