Finding the Fourth Proportional to 861,711.80, 1,292,567.70 and 808,567.70
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Solution
The fourth proportional to 861,711.80, 1,292,567.70 and 808,567.70 is: 1,212,851.55
Step by Step Solution
- Step 1: Write the proportion equation
861,711.80 : 1,292,567.70 = 808,567.70 : x - Step 2: Convert to fraction form
861,711.80/1,292,567.70 = 808,567.70/x - Step 3: Cross multiply
861,711.80x = 1,292,567.70 × 808,567.70 - Step 4: Simplify right side
861,711.80x = 1,045,128,492,283.29 - Step 5: Solve for x
x = 1,045,128,492,283.29/861,711.80 - Step 6: Final answer
x = 1,212,851.55
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.