Finding the Fourth Proportional to 568,391,965.79, 784,382,128.41 and 320,873,320.04
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Solution
The fourth proportional to 568,391,965.79, 784,382,128.41 and 320,873,320.04 is: 442,805,867.90
Step by Step Solution
- Step 1: Write the proportion equation
568,391,965.79 : 784,382,128.41 = 320,873,320.04 : x - Step 2: Convert to fraction form
568,391,965.79/784,382,128.41 = 320,873,320.04/x - Step 3: Cross multiply
568,391,965.79x = 784,382,128.41 × 320,873,320.04 - Step 4: Simplify right side
568,391,965.79x = 251,687,297,719,036,416 - Step 5: Solve for x
x = 251,687,297,719,036,416/568,391,965.79 - Step 6: Final answer
x = 442,805,867.90
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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.