Finding the Fourth Proportional to 990,864.20, 1,367,424.60 and 561,135.08
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Solution
The fourth proportional to 990,864.20, 1,367,424.60 and 561,135.08 is: 774,384.53
Step by Step Solution
- Step 1: Write the proportion equation
990,864.20 : 1,367,424.60 = 561,135.08 : x - Step 2: Convert to fraction form
990,864.20/1,367,424.60 = 561,135.08/x - Step 3: Cross multiply
990,864.20x = 1,367,424.60 × 561,135.08 - Step 4: Simplify right side
990,864.20x = 767,309,912,314.97 - Step 5: Solve for x
x = 767,309,912,314.97/990,864.20 - Step 6: Final answer
x = 774,384.53
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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.