Finding the Fourth Proportional to 827,922.40, 1,142,430.55 and 479,122.63
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Solution
The fourth proportional to 827,922.40, 1,142,430.55 and 479,122.63 is: 661,129.99
Step by Step Solution
- Step 1: Write the proportion equation
827,922.40 : 1,142,430.55 = 479,122.63 : x - Step 2: Convert to fraction form
827,922.40/1,142,430.55 = 479,122.63/x - Step 3: Cross multiply
827,922.40x = 1,142,430.55 × 479,122.63 - Step 4: Simplify right side
827,922.40x = 547,364,325,654.46 - Step 5: Solve for x
x = 547,364,325,654.46/827,922.40 - Step 6: Final answer
x = 661,129.99
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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.