Finding the Fourth Proportional to 728,098.68, 1,004,810.57 and 405,811.08
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Solution
The fourth proportional to 728,098.68, 1,004,810.57 and 405,811.08 is: 560,038.46
Step by Step Solution
- Step 1: Write the proportion equation
728,098.68 : 1,004,810.57 = 405,811.08 : x - Step 2: Convert to fraction form
728,098.68/1,004,810.57 = 405,811.08/x - Step 3: Cross multiply
728,098.68x = 1,004,810.57 × 405,811.08 - Step 4: Simplify right side
728,098.68x = 407,763,260,578.06 - Step 5: Solve for x
x = 407,763,260,578.06/728,098.68 - Step 6: Final answer
x = 560,038.46
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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.