Finding the Fourth Proportional to 2,115,083.59, 2,918,507.38 and 1,209,490.63
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Solution
The fourth proportional to 2,115,083.59, 2,918,507.38 and 1,209,490.63 is: 1,668,920.95
Step by Step Solution
- Step 1: Write the proportion equation
2,115,083.59 : 2,918,507.38 = 1,209,490.63 : x - Step 2: Convert to fraction form
2,115,083.59/2,918,507.38 = 1,209,490.63/x - Step 3: Cross multiply
2,115,083.59x = 2,918,507.38 × 1,209,490.63 - Step 4: Simplify right side
2,115,083.59x = 3,529,907,319,375.85 - Step 5: Solve for x
x = 3,529,907,319,375.85/2,115,083.59 - Step 6: Final answer
x = 1,668,920.95
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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.