Finding the Fourth Proportional to 720,365.58, 994,090.86 and 398,068.74
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Solution
The fourth proportional to 720,365.58, 994,090.86 and 398,068.74 is: 549,327.32
Step by Step Solution
- Step 1: Write the proportion equation
720,365.58 : 994,090.86 = 398,068.74 : x - Step 2: Convert to fraction form
720,365.58/994,090.86 = 398,068.74/x - Step 3: Cross multiply
720,365.58x = 994,090.86 × 398,068.74 - Step 4: Simplify right side
720,365.58x = 395,716,496,085.72 - Step 5: Solve for x
x = 395,716,496,085.72/720,365.58 - Step 6: Final answer
x = 549,327.32
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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.