Finding the Fourth Proportional to 861,684.68, 1,189,101.69 and 479,711.45
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Solution
The fourth proportional to 861,684.68, 1,189,101.69 and 479,711.45 is: 661,988.90
Step by Step Solution
- Step 1: Write the proportion equation
861,684.68 : 1,189,101.69 = 479,711.45 : x - Step 2: Convert to fraction form
861,684.68/1,189,101.69 = 479,711.45/x - Step 3: Cross multiply
861,684.68x = 1,189,101.69 × 479,711.45 - Step 4: Simplify right side
861,684.68x = 570,425,698,880.11 - Step 5: Solve for x
x = 570,425,698,880.11/861,684.68 - Step 6: Final answer
x = 661,988.90
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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.