Finding the Fourth Proportional to 860,108.88, 1,186,990.56 and 478,141.68
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Solution
The fourth proportional to 860,108.88, 1,186,990.56 and 478,141.68 is: 659,857.92
Step by Step Solution
- Step 1: Write the proportion equation
860,108.88 : 1,186,990.56 = 478,141.68 : x - Step 2: Convert to fraction form
860,108.88/1,186,990.56 = 478,141.68/x - Step 3: Cross multiply
860,108.88x = 1,186,990.56 × 478,141.68 - Step 4: Simplify right side
860,108.88x = 567,549,660,502.54 - Step 5: Solve for x
x = 567,549,660,502.54/860,108.88 - Step 6: Final answer
x = 659,857.92
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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.