Finding the Fourth Proportional to 719,145.60, 1,079,020.80 and 386,332.80
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Solution
The fourth proportional to 719,145.60, 1,079,020.80 and 386,332.80 is: 579,661.65
Step by Step Solution
- Step 1: Write the proportion equation
719,145.60 : 1,079,020.80 = 386,332.80 : x - Step 2: Convert to fraction form
719,145.60/1,079,020.80 = 386,332.80/x - Step 3: Cross multiply
719,145.60x = 1,079,020.80 × 386,332.80 - Step 4: Simplify right side
719,145.60x = 416,861,126,922.24 - Step 5: Solve for x
x = 416,861,126,922.24/719,145.60 - Step 6: Final answer
x = 579,661.65
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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.