Finding the Fourth Proportional to 640,642.24, 884,018.64 and 354,116.08
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Solution
The fourth proportional to 640,642.24, 884,018.64 and 354,116.08 is: 488,642.80
Step by Step Solution
- Step 1: Write the proportion equation
640,642.24 : 884,018.64 = 354,116.08 : x - Step 2: Convert to fraction form
640,642.24/884,018.64 = 354,116.08/x - Step 3: Cross multiply
640,642.24x = 884,018.64 × 354,116.08 - Step 4: Simplify right side
640,642.24x = 313,045,215,443.73 - Step 5: Solve for x
x = 313,045,215,443.73/640,642.24 - Step 6: Final answer
x = 488,642.80
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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.