Finding the Fourth Proportional to 1,820,242.49, 2,512,434.20 and 1,056,542.09
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Solution
The fourth proportional to 1,820,242.49, 2,512,434.20 and 1,056,542.09 is: 1,458,318.05
Step by Step Solution
- Step 1: Write the proportion equation
1,820,242.49 : 2,512,434.20 = 1,056,542.09 : x - Step 2: Convert to fraction form
1,820,242.49/2,512,434.20 = 1,056,542.09/x - Step 3: Cross multiply
1,820,242.49x = 2,512,434.20 × 1,056,542.09 - Step 4: Simplify right side
1,820,242.49x = 2,654,492,462,810.60 - Step 5: Solve for x
x = 2,654,492,462,810.60/1,820,242.49 - Step 6: Final answer
x = 1,458,318.05
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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.