Finding the Fourth Proportional to 554,421.38, 765,128.23 and 312,698.49
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Solution
The fourth proportional to 554,421.38, 765,128.23 and 312,698.49 is: 431,538.99
Step by Step Solution
- Step 1: Write the proportion equation
554,421.38 : 765,128.23 = 312,698.49 : x - Step 2: Convert to fraction form
554,421.38/765,128.23 = 312,698.49/x - Step 3: Cross multiply
554,421.38x = 765,128.23 × 312,698.49 - Step 4: Simplify right side
554,421.38x = 239,254,442,830.24 - Step 5: Solve for x
x = 239,254,442,830.24/554,421.38 - Step 6: Final answer
x = 431,538.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.