Finding the Fourth Proportional to 743,302.08, 1,025,727.84 and 421,030.08
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Solution
The fourth proportional to 743,302.08, 1,025,727.84 and 421,030.08 is: 581,005.07
Step by Step Solution
- Step 1: Write the proportion equation
743,302.08 : 1,025,727.84 = 421,030.08 : x - Step 2: Convert to fraction form
743,302.08/1,025,727.84 = 421,030.08/x - Step 3: Cross multiply
743,302.08x = 1,025,727.84 × 421,030.08 - Step 4: Simplify right side
743,302.08x = 431,862,274,533.43 - Step 5: Solve for x
x = 431,862,274,533.43/743,302.08 - Step 6: Final answer
x = 581,005.07
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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.