Finding the Fourth Proportional to 606,921.80, 910,382.70 and 212,937.80
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Solution
The fourth proportional to 606,921.80, 910,382.70 and 212,937.80 is: 319,406.70
Step by Step Solution
- Step 1: Write the proportion equation
606,921.80 : 910,382.70 = 212,937.80 : x - Step 2: Convert to fraction form
606,921.80/910,382.70 = 212,937.80/x - Step 3: Cross multiply
606,921.80x = 910,382.70 × 212,937.80 - Step 4: Simplify right side
606,921.80x = 193,854,889,296.06 - Step 5: Solve for x
x = 193,854,889,296.06/606,921.80 - Step 6: Final answer
x = 319,406.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.