Finding the Fourth Proportional to 1,389,125.12, 2,094,099.68 and 1,296,538.40
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Solution
The fourth proportional to 1,389,125.12, 2,094,099.68 and 1,296,538.40 is: 1,954,525.63
Step by Step Solution
- Step 1: Write the proportion equation
1,389,125.12 : 2,094,099.68 = 1,296,538.40 : x - Step 2: Convert to fraction form
1,389,125.12/2,094,099.68 = 1,296,538.40/x - Step 3: Cross multiply
1,389,125.12x = 2,094,099.68 × 1,296,538.40 - Step 4: Simplify right side
1,389,125.12x = 2,715,080,648,547.71 - Step 5: Solve for x
x = 2,715,080,648,547.71/1,389,125.12 - Step 6: Final answer
x = 1,954,525.63
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Why These Related Problems?
These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.