Finding the Fourth Proportional to 521,867.12, 720,176.73 and 317,918.03
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Solution
The fourth proportional to 521,867.12, 720,176.73 and 317,918.03 is: 438,726.94
Step by Step Solution
- Step 1: Write the proportion equation
521,867.12 : 720,176.73 = 317,918.03 : x - Step 2: Convert to fraction form
521,867.12/720,176.73 = 317,918.03/x - Step 3: Cross multiply
521,867.12x = 720,176.73 × 317,918.03 - Step 4: Simplify right side
521,867.12x = 228,957,167,253.44 - Step 5: Solve for x
x = 228,957,167,253.44/521,867.12 - Step 6: Final answer
x = 438,726.94
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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.