Finding the Fourth Proportional to 5,228,976.49, 7,216,162.80 and 2,905,966.93
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Solution
The fourth proportional to 5,228,976.49, 7,216,162.80 and 2,905,966.93 is: 4,010,331.75
Step by Step Solution
- Step 1: Write the proportion equation
5,228,976.49 : 7,216,162.80 = 2,905,966.93 : x - Step 2: Convert to fraction form
5,228,976.49/7,216,162.80 = 2,905,966.93/x - Step 3: Cross multiply
5,228,976.49x = 7,216,162.80 × 2,905,966.93 - Step 4: Simplify right side
5,228,976.49x = 20,969,930,440,255.80 - Step 5: Solve for x
x = 20,969,930,440,255.80/5,228,976.49 - Step 6: Final answer
x = 4,010,331.75
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1.5x scale
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.