Finding the Fourth Proportional to 719,157.60, 992,445.12 and 396,879.84
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Solution
The fourth proportional to 719,157.60, 992,445.12 and 396,879.84 is: 547,698.39
Step by Step Solution
- Step 1: Write the proportion equation
719,157.60 : 992,445.12 = 396,879.84 : x - Step 2: Convert to fraction form
719,157.60/992,445.12 = 396,879.84/x - Step 3: Cross multiply
719,157.60x = 992,445.12 × 396,879.84 - Step 4: Simplify right side
719,157.60x = 393,881,460,434.38 - Step 5: Solve for x
x = 393,881,460,434.38/719,157.60 - Step 6: Final answer
x = 547,698.39
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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.