Finding the Fourth Proportional to 640,720.68, 884,151.18 and 354,202.08
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Solution
The fourth proportional to 640,720.68, 884,151.18 and 354,202.08 is: 488,774.90
Step by Step Solution
- Step 1: Write the proportion equation
640,720.68 : 884,151.18 = 354,202.08 : x - Step 2: Convert to fraction form
640,720.68/884,151.18 = 354,202.08/x - Step 3: Cross multiply
640,720.68x = 884,151.18 × 354,202.08 - Step 4: Simplify right side
640,720.68x = 313,168,186,990.45 - Step 5: Solve for x
x = 313,168,186,990.45/640,720.68 - Step 6: Final answer
x = 488,774.90
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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.