Finding the Fourth Proportional to 1,125,992.57, 1,553,980.92 and 642,629.93
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Solution
The fourth proportional to 1,125,992.57, 1,553,980.92 and 642,629.93 is: 886,892.75
Step by Step Solution
- Step 1: Write the proportion equation
1,125,992.57 : 1,553,980.92 = 642,629.93 : x - Step 2: Convert to fraction form
1,125,992.57/1,553,980.92 = 642,629.93/x - Step 3: Cross multiply
1,125,992.57x = 1,553,980.92 × 642,629.93 - Step 4: Simplify right side
1,125,992.57x = 998,634,642,071.03 - Step 5: Solve for x
x = 998,634,642,071.03/1,125,992.57 - Step 6: Final answer
x = 886,892.75
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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.