Finding the Fourth Proportional to 1,209,722.58, 1,669,403.94 and 665,846.70
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Solution
The fourth proportional to 1,209,722.58, 1,669,403.94 and 665,846.70 is: 918,861.17
Step by Step Solution
- Step 1: Write the proportion equation
1,209,722.58 : 1,669,403.94 = 665,846.70 : x - Step 2: Convert to fraction form
1,209,722.58/1,669,403.94 = 665,846.70/x - Step 3: Cross multiply
1,209,722.58x = 1,669,403.94 × 665,846.70 - Step 4: Simplify right side
1,209,722.58x = 1,111,567,104,416.00 - Step 5: Solve for x
x = 1,111,567,104,416.00/1,209,722.58 - Step 6: Final answer
x = 918,861.17
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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.