Finding the Fourth Proportional to 394,724,742.80, 544,726,593.96 and 216,105,650.96
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Solution
The fourth proportional to 394,724,742.80, 544,726,593.96 and 216,105,650.96 is: 298,229,328.99
Step by Step Solution
- Step 1: Write the proportion equation
394,724,742.80 : 544,726,593.96 = 216,105,650.96 : x - Step 2: Convert to fraction form
394,724,742.80/544,726,593.96 = 216,105,650.96/x - Step 3: Cross multiply
394,724,742.80x = 544,726,593.96 × 216,105,650.96 - Step 4: Simplify right side
394,724,742.80x = 117,718,495,182,949,424 - Step 5: Solve for x
x = 117,718,495,182,949,424/394,724,742.80 - Step 6: Final answer
x = 298,229,328.99
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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.