Finding the Fourth Proportional to 672,079.70, 1,008,119.55 and 553,981.70
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Solution
The fourth proportional to 672,079.70, 1,008,119.55 and 553,981.70 is: 830,972.55
Step by Step Solution
- Step 1: Write the proportion equation
672,079.70 : 1,008,119.55 = 553,981.70 : x - Step 2: Convert to fraction form
672,079.70/1,008,119.55 = 553,981.70/x - Step 3: Cross multiply
672,079.70x = 1,008,119.55 × 553,981.70 - Step 4: Simplify right side
672,079.70x = 558,479,782,112.24 - Step 5: Solve for x
x = 558,479,782,112.24/672,079.70 - Step 6: Final answer
x = 830,972.55
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.