Finding the Fourth Proportional to 714,438.18, 985,937.44 and 392,178.28
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Solution
The fourth proportional to 714,438.18, 985,937.44 and 392,178.28 is: 541,213.03
Step by Step Solution
- Step 1: Write the proportion equation
714,438.18 : 985,937.44 = 392,178.28 : x - Step 2: Convert to fraction form
714,438.18/985,937.44 = 392,178.28/x - Step 3: Cross multiply
714,438.18x = 985,937.44 × 392,178.28 - Step 4: Simplify right side
714,438.18x = 386,663,249,406.80 - Step 5: Solve for x
x = 386,663,249,406.80/714,438.18 - Step 6: Final answer
x = 541,213.03
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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.