Finding the Fourth Proportional to 1,405,764.19, 2,108,646.27 and 340,806.21
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Solution
The fourth proportional to 1,405,764.19, 2,108,646.27 and 340,806.21 is: 511,209.31
Step by Step Solution
- Step 1: Write the proportion equation
1,405,764.19 : 2,108,646.27 = 340,806.21 : x - Step 2: Convert to fraction form
1,405,764.19/2,108,646.27 = 340,806.21/x - Step 3: Cross multiply
1,405,764.19x = 2,108,646.27 × 340,806.21 - Step 4: Simplify right side
1,405,764.19x = 718,639,743,509.34 - Step 5: Solve for x
x = 718,639,743,509.34/1,405,764.19 - Step 6: Final answer
x = 511,209.31
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.