Finding the Fourth Proportional to 878,859.21, 1,212,916.12 and 534,719.58
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Solution
The fourth proportional to 878,859.21, 1,212,916.12 and 534,719.58 is: 737,968.02
Step by Step Solution
- Step 1: Write the proportion equation
878,859.21 : 1,212,916.12 = 534,719.58 : x - Step 2: Convert to fraction form
878,859.21/1,212,916.12 = 534,719.58/x - Step 3: Cross multiply
878,859.21x = 1,212,916.12 × 534,719.58 - Step 4: Simplify right side
878,859.21x = 648,569,995,384.19 - Step 5: Solve for x
x = 648,569,995,384.19/878,859.21 - Step 6: Final answer
x = 737,968.02
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1.5x scale
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.