Finding the Fourth Proportional to 2,107,563.21, 2,908,866.47 and 1,428,718.41
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Solution
The fourth proportional to 2,107,563.21, 2,908,866.47 and 1,428,718.41 is: 1,971,922.38
Step by Step Solution
- Step 1: Write the proportion equation
2,107,563.21 : 2,908,866.47 = 1,428,718.41 : x - Step 2: Convert to fraction form
2,107,563.21/2,908,866.47 = 1,428,718.41/x - Step 3: Cross multiply
2,107,563.21x = 2,908,866.47 × 1,428,718.41 - Step 4: Simplify right side
2,107,563.21x = 4,155,951,070,777.12 - Step 5: Solve for x
x = 4,155,951,070,777.12/2,107,563.21 - Step 6: Final answer
x = 1,971,922.38
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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.