Finding the Fourth Proportional to 860,425.68, 1,187,388.44 and 478,444.26
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Solution
The fourth proportional to 860,425.68, 1,187,388.44 and 478,444.26 is: 660,253.63
Step by Step Solution
- Step 1: Write the proportion equation
860,425.68 : 1,187,388.44 = 478,444.26 : x - Step 2: Convert to fraction form
860,425.68/1,187,388.44 = 478,444.26/x - Step 3: Cross multiply
860,425.68x = 1,187,388.44 × 478,444.26 - Step 4: Simplify right side
860,425.68x = 568,099,181,116.13 - Step 5: Solve for x
x = 568,099,181,116.13/860,425.68 - Step 6: Final answer
x = 660,253.63
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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.