Finding the Fourth Proportional to 630,790.05, 945,821.49 and 431,352.06
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Solution
The fourth proportional to 630,790.05, 945,821.49 and 431,352.06 is: 646,779.46
Step by Step Solution
- Step 1: Write the proportion equation
630,790.05 : 945,821.49 = 431,352.06 : x - Step 2: Convert to fraction form
630,790.05/945,821.49 = 431,352.06/x - Step 3: Cross multiply
630,790.05x = 945,821.49 × 431,352.06 - Step 4: Simplify right side
630,790.05x = 407,982,048,103.77 - Step 5: Solve for x
x = 407,982,048,103.77/630,790.05 - Step 6: Final answer
x = 646,779.46
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1.5x scale
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.