Finding the Fourth Proportional to 861,325.50, 1,188,617.58 and 479,352.18
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Solution
The fourth proportional to 861,325.50, 1,188,617.58 and 479,352.18 is: 661,499.55
Step by Step Solution
- Step 1: Write the proportion equation
861,325.50 : 1,188,617.58 = 479,352.18 : x - Step 2: Convert to fraction form
861,325.50/1,188,617.58 = 479,352.18/x - Step 3: Cross multiply
861,325.50x = 1,188,617.58 × 479,352.18 - Step 4: Simplify right side
861,325.50x = 569,766,428,159.33 - Step 5: Solve for x
x = 569,766,428,159.33/861,325.50 - Step 6: Final answer
x = 661,499.55
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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.