Finding the Fourth Proportional to 486,538.30, 729,698.10 and 319,232.80
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Solution
The fourth proportional to 486,538.30, 729,698.10 and 319,232.80 is: 478,777.45
Step by Step Solution
- Step 1: Write the proportion equation
486,538.30 : 729,698.10 = 319,232.80 : x - Step 2: Convert to fraction form
486,538.30/729,698.10 = 319,232.80/x - Step 3: Cross multiply
486,538.30x = 729,698.10 × 319,232.80 - Step 4: Simplify right side
486,538.30x = 232,943,567,617.68 - Step 5: Solve for x
x = 232,943,567,617.68/486,538.30 - Step 6: Final answer
x = 478,777.45
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.