Finding the Fourth Proportional to 2,118,351.88, 2,923,645.21 and 1,291,905
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Solution
The fourth proportional to 2,118,351.88, 2,923,645.21 and 1,291,905 is: 1,783,023.82
Step by Step Solution
- Step 1: Write the proportion equation
2,118,351.88 : 2,923,645.21 = 1,291,905 : x - Step 2: Convert to fraction form
2,118,351.88/2,923,645.21 = 1,291,905/x - Step 3: Cross multiply
2,118,351.88x = 2,923,645.21 × 1,291,905 - Step 4: Simplify right side
2,118,351.88x = 3,777,071,861,795.29 - Step 5: Solve for x
x = 3,777,071,861,795.29/2,118,351.88 - Step 6: Final answer
x = 1,783,023.82
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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.