Finding the Fourth Proportional to 1,070,479.81, 1,605,784.58 and 430,781.10
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Solution
The fourth proportional to 1,070,479.81, 1,605,784.58 and 430,781.10 is: 646,197.75
Step by Step Solution
- Step 1: Write the proportion equation
1,070,479.81 : 1,605,784.58 = 430,781.10 : x - Step 2: Convert to fraction form
1,070,479.81/1,605,784.58 = 430,781.10/x - Step 3: Cross multiply
1,070,479.81x = 1,605,784.58 × 430,781.10 - Step 4: Simplify right side
1,070,479.81x = 691,741,647,735.44 - Step 5: Solve for x
x = 691,741,647,735.44/1,070,479.81 - Step 6: Final answer
x = 646,197.75
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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.