Finding the Fourth Proportional to 1,138,208.38, 1,570,731.68 and 621,962.31
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Solution
The fourth proportional to 1,138,208.38, 1,570,731.68 and 621,962.31 is: 858,310.23
Step by Step Solution
- Step 1: Write the proportion equation
1,138,208.38 : 1,570,731.68 = 621,962.31 : x - Step 2: Convert to fraction form
1,138,208.38/1,570,731.68 = 621,962.31/x - Step 3: Cross multiply
1,138,208.38x = 1,570,731.68 × 621,962.31 - Step 4: Simplify right side
1,138,208.38x = 976,935,898,275.08 - Step 5: Solve for x
x = 976,935,898,275.08/1,138,208.38 - Step 6: Final answer
x = 858,310.23
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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.