Finding the Fourth Proportional to 624,711.20, 861,749.52 and 395,197.28
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Solution
The fourth proportional to 624,711.20, 861,749.52 and 395,197.28 is: 545,149.61
Step by Step Solution
- Step 1: Write the proportion equation
624,711.20 : 861,749.52 = 395,197.28 : x - Step 2: Convert to fraction form
624,711.20/861,749.52 = 395,197.28/x - Step 3: Cross multiply
624,711.20x = 861,749.52 × 395,197.28 - Step 4: Simplify right side
624,711.20x = 340,561,066,345.31 - Step 5: Solve for x
x = 340,561,066,345.31/624,711.20 - Step 6: Final answer
x = 545,149.61
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.