Finding the Fourth Proportional to 1,639,387.96, 2,262,518.02 and 1,225,205.39
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Solution
The fourth proportional to 1,639,387.96, 2,262,518.02 and 1,225,205.39 is: 1,690,904.99
Step by Step Solution
- Step 1: Write the proportion equation
1,639,387.96 : 2,262,518.02 = 1,225,205.39 : x - Step 2: Convert to fraction form
1,639,387.96/2,262,518.02 = 1,225,205.39/x - Step 3: Cross multiply
1,639,387.96x = 2,262,518.02 × 1,225,205.39 - Step 4: Simplify right side
1,639,387.96x = 2,772,049,280,263.93 - Step 5: Solve for x
x = 2,772,049,280,263.93/1,639,387.96 - Step 6: Final answer
x = 1,690,904.99
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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.