Finding the Fourth Proportional to 948,447.09, 1,308,840.53 and 518,717.79
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Solution
The fourth proportional to 948,447.09, 1,308,840.53 and 518,717.79 is: 715,821.55
Step by Step Solution
- Step 1: Write the proportion equation
948,447.09 : 1,308,840.53 = 518,717.79 : x - Step 2: Convert to fraction form
948,447.09/1,308,840.53 = 518,717.79/x - Step 3: Cross multiply
948,447.09x = 1,308,840.53 × 518,717.79 - Step 4: Simplify right side
948,447.09x = 678,918,864,590.44 - Step 5: Solve for x
x = 678,918,864,590.44/948,447.09 - Step 6: Final answer
x = 715,821.55
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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.