Finding the Fourth Proportional to 521,278.36, 719,324.37 and 291,783.09
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Solution
The fourth proportional to 521,278.36, 719,324.37 and 291,783.09 is: 402,638.40
Step by Step Solution
- Step 1: Write the proportion equation
521,278.36 : 719,324.37 = 291,783.09 : x - Step 2: Convert to fraction form
521,278.36/719,324.37 = 291,783.09/x - Step 3: Cross multiply
521,278.36x = 719,324.37 × 291,783.09 - Step 4: Simplify right side
521,278.36x = 209,886,683,794.28 - Step 5: Solve for x
x = 209,886,683,794.28/521,278.36 - Step 6: Final answer
x = 402,638.40
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1.5x scale
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.