Finding the Fourth Proportional to 1,538,977.12, 2,122,686.96 and 1,080,194.08
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Solution
The fourth proportional to 1,538,977.12, 2,122,686.96 and 1,080,194.08 is: 1,489,894.72
Step by Step Solution
- Step 1: Write the proportion equation
1,538,977.12 : 2,122,686.96 = 1,080,194.08 : x - Step 2: Convert to fraction form
1,538,977.12/2,122,686.96 = 1,080,194.08/x - Step 3: Cross multiply
1,538,977.12x = 2,122,686.96 × 1,080,194.08 - Step 4: Simplify right side
1,538,977.12x = 2,292,913,887,885.20 - Step 5: Solve for x
x = 2,292,913,887,885.20/1,538,977.12 - Step 6: Final answer
x = 1,489,894.72
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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.