Finding the Fourth Proportional to 408,649.80, 611,808.30 and 396,985.80
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Solution
The fourth proportional to 408,649.80, 611,808.30 and 396,985.80 is: 594,345.59
Step by Step Solution
- Step 1: Write the proportion equation
408,649.80 : 611,808.30 = 396,985.80 : x - Step 2: Convert to fraction form
408,649.80/611,808.30 = 396,985.80/x - Step 3: Cross multiply
408,649.80x = 611,808.30 × 396,985.80 - Step 4: Simplify right side
408,649.80x = 242,879,207,422.14 - Step 5: Solve for x
x = 242,879,207,422.14/408,649.80 - Step 6: Final answer
x = 594,345.59
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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.