Finding the Fourth Proportional to 760,857.83, 1,049,970.84 and 421,318.79
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Solution
The fourth proportional to 760,857.83, 1,049,970.84 and 421,318.79 is: 581,412.75
Step by Step Solution
- Step 1: Write the proportion equation
760,857.83 : 1,049,970.84 = 421,318.79 : x - Step 2: Convert to fraction form
760,857.83/1,049,970.84 = 421,318.79/x - Step 3: Cross multiply
760,857.83x = 1,049,970.84 × 421,318.79 - Step 4: Simplify right side
760,857.83x = 442,372,443,844.08 - Step 5: Solve for x
x = 442,372,443,844.08/760,857.83 - Step 6: Final answer
x = 581,412.75
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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.