Finding the Fourth Proportional to 714,867.12, 985,969.98 and 485,601.17
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Solution
The fourth proportional to 714,867.12, 985,969.98 and 485,601.17 is: 669,758.28
Step by Step Solution
- Step 1: Write the proportion equation
714,867.12 : 985,969.98 = 485,601.17 : x - Step 2: Convert to fraction form
714,867.12/985,969.98 = 485,601.17/x - Step 3: Cross multiply
714,867.12x = 985,969.98 × 485,601.17 - Step 4: Simplify right side
714,867.12x = 478,788,170,943.03 - Step 5: Solve for x
x = 478,788,170,943.03/714,867.12 - Step 6: Final answer
x = 669,758.28
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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.