Finding the Fourth Proportional to 1,405,316.99, 2,107,660.20 and 646,429.66
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Solution
The fourth proportional to 1,405,316.99, 2,107,660.20 and 646,429.66 is: 969,499.46
Step by Step Solution
- Step 1: Write the proportion equation
1,405,316.99 : 2,107,660.20 = 646,429.66 : x - Step 2: Convert to fraction form
1,405,316.99/2,107,660.20 = 646,429.66/x - Step 3: Cross multiply
1,405,316.99x = 2,107,660.20 × 646,429.66 - Step 4: Simplify right side
1,405,316.99x = 1,362,454,070,643.86 - Step 5: Solve for x
x = 1,362,454,070,643.86/1,405,316.99 - Step 6: Final answer
x = 969,499.46
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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.