Finding the Fourth Proportional to 408,644.80, 611,800.80 and 396,980.80
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Solution
The fourth proportional to 408,644.80, 611,800.80 and 396,980.80 is: 594,338.09
Step by Step Solution
- Step 1: Write the proportion equation
408,644.80 : 611,800.80 = 396,980.80 : x - Step 2: Convert to fraction form
408,644.80/611,800.80 = 396,980.80/x - Step 3: Cross multiply
408,644.80x = 611,800.80 × 396,980.80 - Step 4: Simplify right side
408,644.80x = 242,873,171,024.64 - Step 5: Solve for x
x = 242,873,171,024.64/408,644.80 - Step 6: Final answer
x = 594,338.09
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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.