Finding the Fourth Proportional to 1,152,632.94, 1,590,568.74 and 643,368.12
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Solution
The fourth proportional to 1,152,632.94, 1,590,568.74 and 643,368.12 is: 887,811.88
Step by Step Solution
- Step 1: Write the proportion equation
1,152,632.94 : 1,590,568.74 = 643,368.12 : x - Step 2: Convert to fraction form
1,152,632.94/1,590,568.74 = 643,368.12/x - Step 3: Cross multiply
1,152,632.94x = 1,590,568.74 × 643,368.12 - Step 4: Simplify right side
1,152,632.94x = 1,023,321,219,984.57 - Step 5: Solve for x
x = 1,023,321,219,984.57/1,152,632.94 - Step 6: Final answer
x = 887,811.88
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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.