Finding the Fourth Proportional to 845,915.34, 1,269,107.28 and 390,645.66
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Solution
The fourth proportional to 845,915.34, 1,269,107.28 and 390,645.66 is: 586,076.68
Step by Step Solution
- Step 1: Write the proportion equation
845,915.34 : 1,269,107.28 = 390,645.66 : x - Step 2: Convert to fraction form
845,915.34/1,269,107.28 = 390,645.66/x - Step 3: Cross multiply
845,915.34x = 1,269,107.28 × 390,645.66 - Step 4: Simplify right side
845,915.34x = 495,771,251,006.41 - Step 5: Solve for x
x = 495,771,251,006.41/845,915.34 - Step 6: Final answer
x = 586,076.68
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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.