Finding the Fourth Proportional to 764,154.25, 1,054,543.77 and 420,021.99
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Solution
The fourth proportional to 764,154.25, 1,054,543.77 and 420,021.99 is: 579,636.34
Step by Step Solution
- Step 1: Write the proportion equation
764,154.25 : 1,054,543.77 = 420,021.99 : x - Step 2: Convert to fraction form
764,154.25/1,054,543.77 = 420,021.99/x - Step 3: Cross multiply
764,154.25x = 1,054,543.77 × 420,021.99 - Step 4: Simplify right side
764,154.25x = 442,931,572,817.50 - Step 5: Solve for x
x = 442,931,572,817.50/764,154.25 - Step 6: Final answer
x = 579,636.34
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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.