Finding the Fourth Proportional to 2,112,398.19, 2,915,110.17 and 1,145,528.19
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Solution
The fourth proportional to 2,112,398.19, 2,915,110.17 and 1,145,528.19 is: 1,580,829.26
Step by Step Solution
- Step 1: Write the proportion equation
2,112,398.19 : 2,915,110.17 = 1,145,528.19 : x - Step 2: Convert to fraction form
2,112,398.19/2,915,110.17 = 1,145,528.19/x - Step 3: Cross multiply
2,112,398.19x = 2,915,110.17 × 1,145,528.19 - Step 4: Simplify right side
2,112,398.19x = 3,339,340,876,690.69 - Step 5: Solve for x
x = 3,339,340,876,690.69/2,112,398.19 - Step 6: Final answer
x = 1,580,829.26
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Double scale
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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.