Finding the Fourth Proportional to 1,039,289.40, 1,557,767.70 and 440,148.60
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Solution
The fourth proportional to 1,039,289.40, 1,557,767.70 and 440,148.60 is: 659,728.92
Step by Step Solution
- Step 1: Write the proportion equation
1,039,289.40 : 1,557,767.70 = 440,148.60 : x - Step 2: Convert to fraction form
1,039,289.40/1,557,767.70 = 440,148.60/x - Step 3: Cross multiply
1,039,289.40x = 1,557,767.70 × 440,148.60 - Step 4: Simplify right side
1,039,289.40x = 685,649,272,280.22 - Step 5: Solve for x
x = 685,649,272,280.22/1,039,289.40 - Step 6: Final answer
x = 659,728.92
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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.