Finding the Fourth Proportional to 324,769,719.80, 487,154,579.70 and 82,432,623.80
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Solution
The fourth proportional to 324,769,719.80, 487,154,579.70 and 82,432,623.80 is: 123,648,935.70
Step by Step Solution
- Step 1: Write the proportion equation
324,769,719.80 : 487,154,579.70 = 82,432,623.80 : x - Step 2: Convert to fraction form
324,769,719.80/487,154,579.70 = 82,432,623.80/x - Step 3: Cross multiply
324,769,719.80x = 487,154,579.70 × 82,432,623.80 - Step 4: Simplify right side
324,769,719.80x = 40,157,430,200,857,216 - Step 5: Solve for x
x = 40,157,430,200,857,216/324,769,719.80 - Step 6: Final answer
x = 123,648,935.70
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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.