Finding the Fourth Proportional to 529,388.21, 730,555.18 and 287,670.21
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Solution
The fourth proportional to 529,388.21, 730,555.18 and 287,670.21 is: 396,984.59
Step by Step Solution
- Step 1: Write the proportion equation
529,388.21 : 730,555.18 = 287,670.21 : x - Step 2: Convert to fraction form
529,388.21/730,555.18 = 287,670.21/x - Step 3: Cross multiply
529,388.21x = 730,555.18 × 287,670.21 - Step 4: Simplify right side
529,388.21x = 210,158,962,047.19 - Step 5: Solve for x
x = 210,158,962,047.19/529,388.21 - Step 6: Final answer
x = 396,984.59
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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.