Finding the Fourth Proportional to 779,490.26, 1,075,699.78 and 421,794.26
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Solution
The fourth proportional to 779,490.26, 1,075,699.78 and 421,794.26 is: 582,077.82
Step by Step Solution
- Step 1: Write the proportion equation
779,490.26 : 1,075,699.78 = 421,794.26 : x - Step 2: Convert to fraction form
779,490.26/1,075,699.78 = 421,794.26/x - Step 3: Cross multiply
779,490.26x = 1,075,699.78 × 421,794.26 - Step 4: Simplify right side
779,490.26x = 453,723,992,687.26 - Step 5: Solve for x
x = 453,723,992,687.26/779,490.26 - Step 6: Final answer
x = 582,077.82
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1.5x scale
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.