Finding the Fourth Proportional to 873,406.76, 1,205,324.88 and 491,447.12
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Solution
The fourth proportional to 873,406.76, 1,205,324.88 and 491,447.12 is: 678,210.28
Step by Step Solution
- Step 1: Write the proportion equation
873,406.76 : 1,205,324.88 = 491,447.12 : x - Step 2: Convert to fraction form
873,406.76/1,205,324.88 = 491,447.12/x - Step 3: Cross multiply
873,406.76x = 1,205,324.88 × 491,447.12 - Step 4: Simplify right side
873,406.76x = 592,353,440,940.35 - Step 5: Solve for x
x = 592,353,440,940.35/873,406.76 - Step 6: Final answer
x = 678,210.28
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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.