Finding the Fourth Proportional to 4,678,139.12, 6,456,392.16 and 2,842,897.28
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Solution
The fourth proportional to 4,678,139.12, 6,456,392.16 and 2,842,897.28 is: 3,923,538.66
Step by Step Solution
- Step 1: Write the proportion equation
4,678,139.12 : 6,456,392.16 = 2,842,897.28 : x - Step 2: Convert to fraction form
4,678,139.12/6,456,392.16 = 2,842,897.28/x - Step 3: Cross multiply
4,678,139.12x = 6,456,392.16 × 2,842,897.28 - Step 4: Simplify right side
4,678,139.12x = 18,354,859,710,277.32 - Step 5: Solve for x
x = 18,354,859,710,277.32/4,678,139.12 - Step 6: Final answer
x = 3,923,538.66
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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.