Finding the Fourth Proportional to 718,291.23, 991,212.02 and 391,597.17
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Solution
The fourth proportional to 718,291.23, 991,212.02 and 391,597.17 is: 540,387.80
Step by Step Solution
- Step 1: Write the proportion equation
718,291.23 : 991,212.02 = 391,597.17 : x - Step 2: Convert to fraction form
718,291.23/991,212.02 = 391,597.17/x - Step 3: Cross multiply
718,291.23x = 991,212.02 × 391,597.17 - Step 4: Simplify right side
718,291.23x = 388,155,817,695.44 - Step 5: Solve for x
x = 388,155,817,695.44/718,291.23 - Step 6: Final answer
x = 540,387.80
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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.