Finding the Fourth Proportional to 628,113.50, 941,813.33 and 428,675.49
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Solution
The fourth proportional to 628,113.50, 941,813.33 and 428,675.49 is: 642,769.65
Step by Step Solution
- Step 1: Write the proportion equation
628,113.50 : 941,813.33 = 428,675.49 : x - Step 2: Convert to fraction form
628,113.50/941,813.33 = 428,675.49/x - Step 3: Cross multiply
628,113.50x = 941,813.33 × 428,675.49 - Step 4: Simplify right side
628,113.50x = 403,732,288,582.90 - Step 5: Solve for x
x = 403,732,288,582.90/628,113.50 - Step 6: Final answer
x = 642,769.65
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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.