Finding the Fourth Proportional to 990,116.12, 1,366,362.88 and 537,407.12
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Solution
The fourth proportional to 990,116.12, 1,366,362.88 and 537,407.12 is: 741,623.26
Step by Step Solution
- Step 1: Write the proportion equation
990,116.12 : 1,366,362.88 = 537,407.12 : x - Step 2: Convert to fraction form
990,116.12/1,366,362.88 = 537,407.12/x - Step 3: Cross multiply
990,116.12x = 1,366,362.88 × 537,407.12 - Step 4: Simplify right side
990,116.12x = 734,293,140,215.71 - Step 5: Solve for x
x = 734,293,140,215.71/990,116.12 - Step 6: Final answer
x = 741,623.26
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1.5x scale
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.