Finding the Fourth Proportional to 422,908.80, 583,641.12 and 279,417.12
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Solution
The fourth proportional to 422,908.80, 583,641.12 and 279,417.12 is: 385,613.45
Step by Step Solution
- Step 1: Write the proportion equation
422,908.80 : 583,641.12 = 279,417.12 : x - Step 2: Convert to fraction form
422,908.80/583,641.12 = 279,417.12/x - Step 3: Cross multiply
422,908.80x = 583,641.12 × 279,417.12 - Step 4: Simplify right side
422,908.80x = 163,079,320,863.97 - Step 5: Solve for x
x = 163,079,320,863.97/422,908.80 - Step 6: Final answer
x = 385,613.45
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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.