Finding the Fourth Proportional to 860,138.80, 1,187,063.36 and 478,201.12
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Solution
The fourth proportional to 860,138.80, 1,187,063.36 and 478,201.12 is: 659,957.47
Step by Step Solution
- Step 1: Write the proportion equation
860,138.80 : 1,187,063.36 = 478,201.12 : x - Step 2: Convert to fraction form
860,138.80/1,187,063.36 = 478,201.12/x - Step 3: Cross multiply
860,138.80x = 1,187,063.36 × 478,201.12 - Step 4: Simplify right side
860,138.80x = 567,655,028,262.96 - Step 5: Solve for x
x = 567,655,028,262.96/860,138.80 - Step 6: Final answer
x = 659,957.47
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1.5x scale
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.