Finding the Fourth Proportional to 1,125,401.63, 1,553,202.09 and 641,855.93
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Solution
The fourth proportional to 1,125,401.63, 1,553,202.09 and 641,855.93 is: 885,845.51
Step by Step Solution
- Step 1: Write the proportion equation
1,125,401.63 : 1,553,202.09 = 641,855.93 : x - Step 2: Convert to fraction form
1,125,401.63/1,553,202.09 = 641,855.93/x - Step 3: Cross multiply
1,125,401.63x = 1,553,202.09 × 641,855.93 - Step 4: Simplify right side
1,125,401.63x = 996,931,978,244.86 - Step 5: Solve for x
x = 996,931,978,244.86/1,125,401.63 - Step 6: Final answer
x = 885,845.51
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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.