Finding the Fourth Proportional to 390,023.05, 585,034.58 and 363,779.05
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Solution
The fourth proportional to 390,023.05, 585,034.58 and 363,779.05 is: 545,668.58
Step by Step Solution
- Step 1: Write the proportion equation
390,023.05 : 585,034.58 = 363,779.05 : x - Step 2: Convert to fraction form
390,023.05/585,034.58 = 363,779.05/x - Step 3: Cross multiply
390,023.05x = 585,034.58 × 363,779.05 - Step 4: Simplify right side
390,023.05x = 212,823,321,910.65 - Step 5: Solve for x
x = 212,823,321,910.65/390,023.05 - Step 6: Final answer
x = 545,668.58
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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.