Finding the Fourth Proportional to 386,507.84, 534,112.80 and 290,847.92
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Solution
The fourth proportional to 386,507.84, 534,112.80 and 290,847.92 is: 401,920.95
Step by Step Solution
- Step 1: Write the proportion equation
386,507.84 : 534,112.80 = 290,847.92 : x - Step 2: Convert to fraction form
386,507.84/534,112.80 = 290,847.92/x - Step 3: Cross multiply
386,507.84x = 534,112.80 × 290,847.92 - Step 4: Simplify right side
386,507.84x = 155,345,596,925.38 - Step 5: Solve for x
x = 155,345,596,925.38/386,507.84 - Step 6: Final answer
x = 401,920.95
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.