Finding the Fourth Proportional to 998,420.20, 1,497,824.70 and 429,800.20
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Solution
The fourth proportional to 998,420.20, 1,497,824.70 and 429,800.20 is: 644,783.99
Step by Step Solution
- Step 1: Write the proportion equation
998,420.20 : 1,497,824.70 = 429,800.20 : x - Step 2: Convert to fraction form
998,420.20/1,497,824.70 = 429,800.20/x - Step 3: Cross multiply
998,420.20x = 1,497,824.70 × 429,800.20 - Step 4: Simplify right side
998,420.20x = 643,765,355,624.94 - Step 5: Solve for x
x = 643,765,355,624.94/998,420.20 - Step 6: Final answer
x = 644,783.99
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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.