Finding the Fourth Proportional to 714,219.84, 985,638.24 and 391,911.12
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Solution
The fourth proportional to 714,219.84, 985,638.24 and 391,911.12 is: 540,845.50
Step by Step Solution
- Step 1: Write the proportion equation
714,219.84 : 985,638.24 = 391,911.12 : x - Step 2: Convert to fraction form
714,219.84/985,638.24 = 391,911.12/x - Step 3: Cross multiply
714,219.84x = 985,638.24 × 391,911.12 - Step 4: Simplify right side
714,219.84x = 386,282,586,553.23 - Step 5: Solve for x
x = 386,282,586,553.23/714,219.84 - Step 6: Final answer
x = 540,845.50
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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.