Finding the Fourth Proportional to 943,776.68, 1,302,696.42 and 642,145.64
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Solution
The fourth proportional to 943,776.68, 1,302,696.42 and 642,145.64 is: 886,354.63
Step by Step Solution
- Step 1: Write the proportion equation
943,776.68 : 1,302,696.42 = 642,145.64 : x - Step 2: Convert to fraction form
943,776.68/1,302,696.42 = 642,145.64/x - Step 3: Cross multiply
943,776.68x = 1,302,696.42 × 642,145.64 - Step 4: Simplify right side
943,776.68x = 836,520,826,346.61 - Step 5: Solve for x
x = 836,520,826,346.61/943,776.68 - Step 6: Final answer
x = 886,354.63
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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.