Finding the Fourth Proportional to 521,867.62, 720,177.42 and 317,918.53
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Solution
The fourth proportional to 521,867.62, 720,177.42 and 317,918.53 is: 438,727.63
Step by Step Solution
- Step 1: Write the proportion equation
521,867.62 : 720,177.42 = 317,918.53 : x - Step 2: Convert to fraction form
521,867.62/720,177.42 = 317,918.53/x - Step 3: Cross multiply
521,867.62x = 720,177.42 × 317,918.53 - Step 4: Simplify right side
521,867.62x = 228,957,746,705.59 - Step 5: Solve for x
x = 228,957,746,705.59/521,867.62 - Step 6: Final answer
x = 438,727.63
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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.