Finding the Fourth Proportional to 1,138,028.49, 1,570,460.99 and 621,771.30
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Solution
The fourth proportional to 1,138,028.49, 1,570,460.99 and 621,771.30 is: 858,034.38
Step by Step Solution
- Step 1: Write the proportion equation
1,138,028.49 : 1,570,460.99 = 621,771.30 : x - Step 2: Convert to fraction form
1,138,028.49/1,570,460.99 = 621,771.30/x - Step 3: Cross multiply
1,138,028.49x = 1,570,460.99 × 621,771.30 - Step 4: Simplify right side
1,138,028.49x = 976,467,569,376.83 - Step 5: Solve for x
x = 976,467,569,376.83/1,138,028.49 - Step 6: Final answer
x = 858,034.38
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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.