Finding the Fourth Proportional to 557,365.54, 769,138.70 and 315,649.84
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Solution
The fourth proportional to 557,365.54, 769,138.70 and 315,649.84 is: 435,582.20
Step by Step Solution
- Step 1: Write the proportion equation
557,365.54 : 769,138.70 = 315,649.84 : x - Step 2: Convert to fraction form
557,365.54/769,138.70 = 315,649.84/x - Step 3: Cross multiply
557,365.54x = 769,138.70 × 315,649.84 - Step 4: Simplify right side
557,365.54x = 242,778,507,592.81 - Step 5: Solve for x
x = 242,778,507,592.81/557,365.54 - Step 6: Final answer
x = 435,582.20
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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.