Finding the Fourth Proportional to 990,866, 1,367,349.32 and 561,149.21
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Solution
The fourth proportional to 990,866, 1,367,349.32 and 561,149.21 is: 774,359.99
Step by Step Solution
- Step 1: Write the proportion equation
990,866 : 1,367,349.32 = 561,149.21 : x - Step 2: Convert to fraction form
990,866/1,367,349.32 = 561,149.21/x - Step 3: Cross multiply
990,866x = 1,367,349.32 × 561,149.21 - Step 4: Simplify right side
990,866x = 767,286,983,875.29 - Step 5: Solve for x
x = 767,286,983,875.29/990,866 - Step 6: Final answer
x = 774,359.99
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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.