Finding the Fourth Proportional to 623,156.40, 858,948.42 and 486,953.68
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Solution
The fourth proportional to 623,156.40, 858,948.42 and 486,953.68 is: 671,208.86
Step by Step Solution
- Step 1: Write the proportion equation
623,156.40 : 858,948.42 = 486,953.68 : x - Step 2: Convert to fraction form
623,156.40/858,948.42 = 486,953.68/x - Step 3: Cross multiply
623,156.40x = 858,948.42 × 486,953.68 - Step 4: Simplify right side
623,156.40x = 418,268,094,049.19 - Step 5: Solve for x
x = 418,268,094,049.19/623,156.40 - Step 6: Final answer
x = 671,208.86
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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.