Finding the Fourth Proportional to 1,820,121.40, 2,512,267.14 and 1,056,421
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Solution
The fourth proportional to 1,820,121.40, 2,512,267.14 and 1,056,421 is: 1,458,150.96
Step by Step Solution
- Step 1: Write the proportion equation
1,820,121.40 : 2,512,267.14 = 1,056,421 : x - Step 2: Convert to fraction form
1,820,121.40/2,512,267.14 = 1,056,421/x - Step 3: Cross multiply
1,820,121.40x = 2,512,267.14 × 1,056,421 - Step 4: Simplify right side
1,820,121.40x = 2,654,011,764,305.94 - Step 5: Solve for x
x = 2,654,011,764,305.94/1,820,121.40 - Step 6: Final answer
x = 1,458,150.96
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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.