Finding the Fourth Proportional to 1,209,141.05, 1,668,580.24 and 665,277.21
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Solution
The fourth proportional to 1,209,141.05, 1,668,580.24 and 665,277.21 is: 918,063.62
Step by Step Solution
- Step 1: Write the proportion equation
1,209,141.05 : 1,668,580.24 = 665,277.21 : x - Step 2: Convert to fraction form
1,209,141.05/1,668,580.24 = 665,277.21/x - Step 3: Cross multiply
1,209,141.05x = 1,668,580.24 × 665,277.21 - Step 4: Simplify right side
1,209,141.05x = 1,110,068,406,728.33 - Step 5: Solve for x
x = 1,110,068,406,728.33/1,209,141.05 - Step 6: Final answer
x = 918,063.62
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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.