Finding the Fourth Proportional to 513,276.60, 769,040.10 and 438,043.80
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Solution
The fourth proportional to 513,276.60, 769,040.10 and 438,043.80 is: 656,319.12
Step by Step Solution
- Step 1: Write the proportion equation
513,276.60 : 769,040.10 = 438,043.80 : x - Step 2: Convert to fraction form
513,276.60/769,040.10 = 438,043.80/x - Step 3: Cross multiply
513,276.60x = 769,040.10 × 438,043.80 - Step 4: Simplify right side
513,276.60x = 336,873,247,756.38 - Step 5: Solve for x
x = 336,873,247,756.38/513,276.60 - Step 6: Final answer
x = 656,319.12
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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.