Finding the Fourth Proportional to 457,437.20, 686,544.60 and 368,790.80
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Solution
The fourth proportional to 457,437.20, 686,544.60 and 368,790.80 is: 553,499.65
Step by Step Solution
- Step 1: Write the proportion equation
457,437.20 : 686,544.60 = 368,790.80 : x - Step 2: Convert to fraction form
457,437.20/686,544.60 = 368,790.80/x - Step 3: Cross multiply
457,437.20x = 686,544.60 × 368,790.80 - Step 4: Simplify right side
457,437.20x = 253,191,332,269.68 - Step 5: Solve for x
x = 253,191,332,269.68/457,437.20 - Step 6: Final answer
x = 553,499.65
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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.