Finding the Fourth Proportional to 513,783.40, 770,675.10 and 408,029.80
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Solution
The fourth proportional to 513,783.40, 770,675.10 and 408,029.80 is: 612,044.70
Step by Step Solution
- Step 1: Write the proportion equation
513,783.40 : 770,675.10 = 408,029.80 : x - Step 2: Convert to fraction form
513,783.40/770,675.10 = 408,029.80/x - Step 3: Cross multiply
513,783.40x = 770,675.10 × 408,029.80 - Step 4: Simplify right side
513,783.40x = 314,458,406,917.98 - Step 5: Solve for x
x = 314,458,406,917.98/513,783.40 - Step 6: Final answer
x = 612,044.70
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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.