Finding the Fourth Proportional to 2,115,089.97, 2,918,516.16 and 1,209,497.01
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Solution
The fourth proportional to 2,115,089.97, 2,918,516.16 and 1,209,497.01 is: 1,668,929.75
Step by Step Solution
- Step 1: Write the proportion equation
2,115,089.97 : 2,918,516.16 = 1,209,497.01 : x - Step 2: Convert to fraction form
2,115,089.97/2,918,516.16 = 1,209,497.01/x - Step 3: Cross multiply
2,115,089.97x = 2,918,516.16 × 1,209,497.01 - Step 4: Simplify right side
2,115,089.97x = 3,529,936,569,156.68 - Step 5: Solve for x
x = 3,529,936,569,156.68/2,115,089.97 - Step 6: Final answer
x = 1,668,929.75
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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.