Finding the Fourth Proportional to 899,892.21, 1,242,163.98 and 518,071.17
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Solution
The fourth proportional to 899,892.21, 1,242,163.98 and 518,071.17 is: 715,118.25
Step by Step Solution
- Step 1: Write the proportion equation
899,892.21 : 1,242,163.98 = 518,071.17 : x - Step 2: Convert to fraction form
899,892.21/1,242,163.98 = 518,071.17/x - Step 3: Cross multiply
899,892.21x = 1,242,163.98 × 518,071.17 - Step 4: Simplify right side
899,892.21x = 643,529,346,450.46 - Step 5: Solve for x
x = 643,529,346,450.46/899,892.21 - Step 6: Final answer
x = 715,118.25
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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.