Finding the Fourth Proportional to 998,439.30, 1,497,658.95 and 620,525.70
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Solution
The fourth proportional to 998,439.30, 1,497,658.95 and 620,525.70 is: 930,788.55
Step by Step Solution
- Step 1: Write the proportion equation
998,439.30 : 1,497,658.95 = 620,525.70 : x - Step 2: Convert to fraction form
998,439.30/1,497,658.95 = 620,525.70/x - Step 3: Cross multiply
998,439.30x = 1,497,658.95 × 620,525.70 - Step 4: Simplify right side
998,439.30x = 929,335,868,310.02 - Step 5: Solve for x
x = 929,335,868,310.02/998,439.30 - Step 6: Final answer
x = 930,788.55
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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.