Finding the Fourth Proportional to 499,961.84, 689,990.44 and 285,110.96
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Solution
The fourth proportional to 499,961.84, 689,990.44 and 285,110.96 is: 393,477.70
Step by Step Solution
- Step 1: Write the proportion equation
499,961.84 : 689,990.44 = 285,110.96 : x - Step 2: Convert to fraction form
499,961.84/689,990.44 = 285,110.96/x - Step 3: Cross multiply
499,961.84x = 689,990.44 × 285,110.96 - Step 4: Simplify right side
499,961.84x = 196,723,836,739.22 - Step 5: Solve for x
x = 196,723,836,739.22/499,961.84 - Step 6: Final answer
x = 393,477.70
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.