Finding the Fourth Proportional to 1,591,335.21, 2,386,979.44 and 393,257.49
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Solution
The fourth proportional to 1,591,335.21, 2,386,979.44 and 393,257.49 is: 589,880.46
Step by Step Solution
- Step 1: Write the proportion equation
1,591,335.21 : 2,386,979.44 = 393,257.49 : x - Step 2: Convert to fraction form
1,591,335.21/2,386,979.44 = 393,257.49/x - Step 3: Cross multiply
1,591,335.21x = 2,386,979.44 × 393,257.49 - Step 4: Simplify right side
1,591,335.21x = 938,697,543,256.01 - Step 5: Solve for x
x = 938,697,543,256.01/1,591,335.21 - Step 6: Final answer
x = 589,880.46
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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.