Finding the Fourth Proportional to 387,991.80, 578,561.22 and 340,799.99
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Solution
The fourth proportional to 387,991.80, 578,561.22 and 340,799.99 is: 508,190.26
Step by Step Solution
- Step 1: Write the proportion equation
387,991.80 : 578,561.22 = 340,799.99 : x - Step 2: Convert to fraction form
387,991.80/578,561.22 = 340,799.99/x - Step 3: Cross multiply
387,991.80x = 578,561.22 × 340,799.99 - Step 4: Simplify right side
387,991.80x = 197,173,655,097.58 - Step 5: Solve for x
x = 197,173,655,097.58/387,991.80 - Step 6: Final answer
x = 508,190.26
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.