Finding the Fourth Proportional to 1,387,851.70, 2,081,777.55 and 1,072,923.70
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Solution
The fourth proportional to 1,387,851.70, 2,081,777.55 and 1,072,923.70 is: 1,609,385.55
Step by Step Solution
- Step 1: Write the proportion equation
1,387,851.70 : 2,081,777.55 = 1,072,923.70 : x - Step 2: Convert to fraction form
1,387,851.70/2,081,777.55 = 1,072,923.70/x - Step 3: Cross multiply
1,387,851.70x = 2,081,777.55 × 1,072,923.70 - Step 4: Simplify right side
1,387,851.70x = 2,233,588,471,522.94 - Step 5: Solve for x
x = 2,233,588,471,522.94/1,387,851.70 - Step 6: Final answer
x = 1,609,385.55
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.