Finding the Fourth Proportional to 718,257.85, 991,202.24 and 395,979.28
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Solution
The fourth proportional to 718,257.85, 991,202.24 and 395,979.28 is: 546,454.94
Step by Step Solution
- Step 1: Write the proportion equation
718,257.85 : 991,202.24 = 395,979.28 : x - Step 2: Convert to fraction form
718,257.85/991,202.24 = 395,979.28/x - Step 3: Cross multiply
718,257.85x = 991,202.24 × 395,979.28 - Step 4: Simplify right side
718,257.85x = 392,495,549,329.59 - Step 5: Solve for x
x = 392,495,549,329.59/718,257.85 - Step 6: Final answer
x = 546,454.94
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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.