Finding the Fourth Proportional to 386,641.80, 579,962.70 and 324,433.80
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Solution
The fourth proportional to 386,641.80, 579,962.70 and 324,433.80 is: 486,650.70
Step by Step Solution
- Step 1: Write the proportion equation
386,641.80 : 579,962.70 = 324,433.80 : x - Step 2: Convert to fraction form
386,641.80/579,962.70 = 324,433.80/x - Step 3: Cross multiply
386,641.80x = 579,962.70 × 324,433.80 - Step 4: Simplify right side
386,641.80x = 188,159,502,619.26 - Step 5: Solve for x
x = 188,159,502,619.26/386,641.80 - Step 6: Final answer
x = 486,650.70
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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.