Finding the Fourth Proportional to 728,674.41, 1,005,545.97 and 402,000.48
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Solution
The fourth proportional to 728,674.41, 1,005,545.97 and 402,000.48 is: 554,747.03
Step by Step Solution
- Step 1: Write the proportion equation
728,674.41 : 1,005,545.97 = 402,000.48 : x - Step 2: Convert to fraction form
728,674.41/1,005,545.97 = 402,000.48/x - Step 3: Cross multiply
728,674.41x = 1,005,545.97 × 402,000.48 - Step 4: Simplify right side
728,674.41x = 404,229,962,602.07 - Step 5: Solve for x
x = 404,229,962,602.07/728,674.41 - Step 6: Final answer
x = 554,747.03
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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.