Finding the Fourth Proportional to 407,953.70, 611,930.55 and 399,205.70
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Solution
The fourth proportional to 407,953.70, 611,930.55 and 399,205.70 is: 598,808.55
Step by Step Solution
- Step 1: Write the proportion equation
407,953.70 : 611,930.55 = 399,205.70 : x - Step 2: Convert to fraction form
407,953.70/611,930.55 = 399,205.70/x - Step 3: Cross multiply
407,953.70x = 611,930.55 × 399,205.70 - Step 4: Simplify right side
407,953.70x = 244,286,163,564.14 - Step 5: Solve for x
x = 244,286,163,564.14/407,953.70 - Step 6: Final answer
x = 598,808.55
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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.