Finding the Fourth Proportional to 1,211,918.64, 1,672,522.68 and 668,051.76
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Solution
The fourth proportional to 1,211,918.64, 1,672,522.68 and 668,051.76 is: 921,952.75
Step by Step Solution
- Step 1: Write the proportion equation
1,211,918.64 : 1,672,522.68 = 668,051.76 : x - Step 2: Convert to fraction form
1,211,918.64/1,672,522.68 = 668,051.76/x - Step 3: Cross multiply
1,211,918.64x = 1,672,522.68 × 668,051.76 - Step 4: Simplify right side
1,211,918.64x = 1,117,331,720,013.92 - Step 5: Solve for x
x = 1,117,331,720,013.92/1,211,918.64 - Step 6: Final answer
x = 921,952.75
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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.