Finding the Fourth Proportional to 415,543.80, 623,315.70 and 415,543.80
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Solution
The fourth proportional to 415,543.80, 623,315.70 and 415,543.80 is: 623,315.70
Step by Step Solution
- Step 1: Write the proportion equation
415,543.80 : 623,315.70 = 415,543.80 : x - Step 2: Convert to fraction form
415,543.80/623,315.70 = 415,543.80/x - Step 3: Cross multiply
415,543.80x = 623,315.70 × 415,543.80 - Step 4: Simplify right side
415,543.80x = 259,014,974,577.66 - Step 5: Solve for x
x = 259,014,974,577.66/415,543.80 - Step 6: Final answer
x = 623,315.70
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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.