Finding the Fourth Proportional to 1,130,778.70, 1,560,456.49 and 621,470.14
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Solution
The fourth proportional to 1,130,778.70, 1,560,456.49 and 621,470.14 is: 857,618.84
Step by Step Solution
- Step 1: Write the proportion equation
1,130,778.70 : 1,560,456.49 = 621,470.14 : x - Step 2: Convert to fraction form
1,130,778.70/1,560,456.49 = 621,470.14/x - Step 3: Cross multiply
1,130,778.70x = 1,560,456.49 × 621,470.14 - Step 4: Simplify right side
1,130,778.70x = 969,777,113,304.21 - Step 5: Solve for x
x = 969,777,113,304.21/1,130,778.70 - Step 6: Final answer
x = 857,618.84
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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.