Finding the Fourth Proportional to 989,423.96, 1,365,405.48 and 559,694.96
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Solution
The fourth proportional to 989,423.96, 1,365,405.48 and 559,694.96 is: 772,379.28
Step by Step Solution
- Step 1: Write the proportion equation
989,423.96 : 1,365,405.48 = 559,694.96 : x - Step 2: Convert to fraction form
989,423.96/1,365,405.48 = 559,694.96/x - Step 3: Cross multiply
989,423.96x = 1,365,405.48 × 559,694.96 - Step 4: Simplify right side
989,423.96x = 764,210,565,512.38 - Step 5: Solve for x
x = 764,210,565,512.38/989,423.96 - Step 6: Final answer
x = 772,379.28
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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.