Finding the Fourth Proportional to 724,979.43, 1,000,339.70 and 418,943.63
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Solution
The fourth proportional to 724,979.43, 1,000,339.70 and 418,943.63 is: 578,065.98
Step by Step Solution
- Step 1: Write the proportion equation
724,979.43 : 1,000,339.70 = 418,943.63 : x - Step 2: Convert to fraction form
724,979.43/1,000,339.70 = 418,943.63/x - Step 3: Cross multiply
724,979.43x = 1,000,339.70 × 418,943.63 - Step 4: Simplify right side
724,979.43x = 419,085,945,557.24 - Step 5: Solve for x
x = 419,085,945,557.24/724,979.43 - Step 6: Final answer
x = 578,065.98
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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.