Finding the Fourth Proportional to 421,904.77, 635,116.68 and 378,503.75
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Solution
The fourth proportional to 421,904.77, 635,116.68 and 378,503.75 is: 569,782.72
Step by Step Solution
- Step 1: Write the proportion equation
421,904.77 : 635,116.68 = 378,503.75 : x - Step 2: Convert to fraction form
421,904.77/635,116.68 = 378,503.75/x - Step 3: Cross multiply
421,904.77x = 635,116.68 × 378,503.75 - Step 4: Simplify right side
421,904.77x = 240,394,046,655.34 - Step 5: Solve for x
x = 240,394,046,655.34/421,904.77 - Step 6: Final answer
x = 569,782.72
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Why These Related Problems?
These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.