Finding the Fourth Proportional to 497,621.87, 686,501.62 and 316,236.54
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Solution
The fourth proportional to 497,621.87, 686,501.62 and 316,236.54 is: 436,268.80
Step by Step Solution
- Step 1: Write the proportion equation
497,621.87 : 686,501.62 = 316,236.54 : x - Step 2: Convert to fraction form
497,621.87/686,501.62 = 316,236.54/x - Step 3: Cross multiply
497,621.87x = 686,501.62 × 316,236.54 - Step 4: Simplify right side
497,621.87x = 217,096,895,432.01 - Step 5: Solve for x
x = 217,096,895,432.01/497,621.87 - Step 6: Final answer
x = 436,268.80
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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.