Finding the Fourth Proportional to 631,403.70, 871,326.12 and 344,916.42
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Solution
The fourth proportional to 631,403.70, 871,326.12 and 344,916.42 is: 475,978.66
Step by Step Solution
- Step 1: Write the proportion equation
631,403.70 : 871,326.12 = 344,916.42 : x - Step 2: Convert to fraction form
631,403.70/871,326.12 = 344,916.42/x - Step 3: Cross multiply
631,403.70x = 871,326.12 × 344,916.42 - Step 4: Simplify right side
631,403.70x = 300,534,685,962.89 - Step 5: Solve for x
x = 300,534,685,962.89/631,403.70 - Step 6: Final answer
x = 475,978.66
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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.