Finding the Fourth Proportional to 457,423.20, 686,523.60 and 368,776.80
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Solution
The fourth proportional to 457,423.20, 686,523.60 and 368,776.80 is: 553,478.65
Step by Step Solution
- Step 1: Write the proportion equation
457,423.20 : 686,523.60 = 368,776.80 : x - Step 2: Convert to fraction form
457,423.20/686,523.60 = 368,776.80/x - Step 3: Cross multiply
457,423.20x = 686,523.60 × 368,776.80 - Step 4: Simplify right side
457,423.20x = 253,173,976,332.48 - Step 5: Solve for x
x = 253,173,976,332.48/457,423.20 - Step 6: Final answer
x = 553,478.65
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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.