Finding the Fourth Proportional to 785,589,383.92, 1,178,307,561.36 and 319,278,766.72
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Solution
The fourth proportional to 785,589,383.92, 1,178,307,561.36 and 319,278,766.72 is: 478,887,053.09
Step by Step Solution
- Step 1: Write the proportion equation
785,589,383.92 : 1,178,307,561.36 = 319,278,766.72 : x - Step 2: Convert to fraction form
785,589,383.92/1,178,307,561.36 = 319,278,766.72/x - Step 3: Cross multiply
785,589,383.92x = 1,178,307,561.36 × 319,278,766.72 - Step 4: Simplify right side
785,589,383.92x = 376,208,585,007,871,552 - Step 5: Solve for x
x = 376,208,585,007,871,552/785,589,383.92 - Step 6: Final answer
x = 478,887,053.09
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.