Finding the Fourth Proportional to 1,209,253.12, 1,668,770.88 and 672,709.12
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Solution
The fourth proportional to 1,209,253.12, 1,668,770.88 and 672,709.12 is: 928,339.46
Step by Step Solution
- Step 1: Write the proportion equation
1,209,253.12 : 1,668,770.88 = 672,709.12 : x - Step 2: Convert to fraction form
1,209,253.12/1,668,770.88 = 672,709.12/x - Step 3: Cross multiply
1,209,253.12x = 1,668,770.88 × 672,709.12 - Step 4: Simplify right side
1,209,253.12x = 1,122,597,390,166.43 - Step 5: Solve for x
x = 1,122,597,390,166.43/1,209,253.12 - Step 6: Final answer
x = 928,339.46
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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.