Finding the Fourth Proportional to 1,689,209.12, 2,331,109.14 and 925,290.20
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Solution
The fourth proportional to 1,689,209.12, 2,331,109.14 and 925,290.20 is: 1,276,900.78
Step by Step Solution
- Step 1: Write the proportion equation
1,689,209.12 : 2,331,109.14 = 925,290.20 : x - Step 2: Convert to fraction form
1,689,209.12/2,331,109.14 = 925,290.20/x - Step 3: Cross multiply
1,689,209.12x = 2,331,109.14 × 925,290.20 - Step 4: Simplify right side
1,689,209.12x = 2,156,952,442,372.43 - Step 5: Solve for x
x = 2,156,952,442,372.43/1,689,209.12 - Step 6: Final answer
x = 1,276,900.78
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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.