Finding the Fourth Proportional to 513,040.13, 769,560.20 and 139,063.13
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Solution
The fourth proportional to 513,040.13, 769,560.20 and 139,063.13 is: 208,594.70
Step by Step Solution
- Step 1: Write the proportion equation
513,040.13 : 769,560.20 = 139,063.13 : x - Step 2: Convert to fraction form
513,040.13/769,560.20 = 139,063.13/x - Step 3: Cross multiply
513,040.13x = 769,560.20 × 139,063.13 - Step 4: Simplify right side
513,040.13x = 107,017,449,440.11 - Step 5: Solve for x
x = 107,017,449,440.11/513,040.13 - Step 6: Final answer
x = 208,594.70
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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.