Finding the Fourth Proportional to 1,421,783.71, 1,961,474.04 and 992,315.23
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Solution
The fourth proportional to 1,421,783.71, 1,961,474.04 and 992,315.23 is: 1,368,984.99
Step by Step Solution
- Step 1: Write the proportion equation
1,421,783.71 : 1,961,474.04 = 992,315.23 : x - Step 2: Convert to fraction form
1,421,783.71/1,961,474.04 = 992,315.23/x - Step 3: Cross multiply
1,421,783.71x = 1,961,474.04 × 992,315.23 - Step 4: Simplify right side
1,421,783.71x = 1,946,400,563,141.63 - Step 5: Solve for x
x = 1,946,400,563,141.63/1,421,783.71 - Step 6: Final answer
x = 1,368,984.99
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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.