Finding the Fourth Proportional to 1,284,401.25, 1,772,473.86 and 711,478.53
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Solution
The fourth proportional to 1,284,401.25, 1,772,473.86 and 711,478.53 is: 981,840.45
Step by Step Solution
- Step 1: Write the proportion equation
1,284,401.25 : 1,772,473.86 = 711,478.53 : x - Step 2: Convert to fraction form
1,284,401.25/1,772,473.86 = 711,478.53/x - Step 3: Cross multiply
1,284,401.25x = 1,772,473.86 × 711,478.53 - Step 4: Simplify right side
1,284,401.25x = 1,261,077,096,376.23 - Step 5: Solve for x
x = 1,261,077,096,376.23/1,284,401.25 - Step 6: Final answer
x = 981,840.45
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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.