Finding the Fourth Proportional to 990,106.12, 1,366,349.07 and 537,397.12
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Solution
The fourth proportional to 990,106.12, 1,366,349.07 and 537,397.12 is: 741,609.45
Step by Step Solution
- Step 1: Write the proportion equation
990,106.12 : 1,366,349.07 = 537,397.12 : x - Step 2: Convert to fraction form
990,106.12/1,366,349.07 = 537,397.12/x - Step 3: Cross multiply
990,106.12x = 1,366,349.07 × 537,397.12 - Step 4: Simplify right side
990,106.12x = 734,272,055,132.68 - Step 5: Solve for x
x = 734,272,055,132.68/990,106.12 - Step 6: Final answer
x = 741,609.45
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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.