Finding the Fourth Proportional to 1,299,643.16, 1,793,387.20 and 718,853.79
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Solution
The fourth proportional to 1,299,643.16, 1,793,387.20 and 718,853.79 is: 991,951.65
Step by Step Solution
- Step 1: Write the proportion equation
1,299,643.16 : 1,793,387.20 = 718,853.79 : x - Step 2: Convert to fraction form
1,299,643.16/1,793,387.20 = 718,853.79/x - Step 3: Cross multiply
1,299,643.16x = 1,793,387.20 × 718,853.79 - Step 4: Simplify right side
1,299,643.16x = 1,289,183,183,860.35 - Step 5: Solve for x
x = 1,289,183,183,860.35/1,299,643.16 - Step 6: Final answer
x = 991,951.65
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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.