Finding the Fourth Proportional to 640,719.68, 884,149.80 and 354,201.08
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Solution
The fourth proportional to 640,719.68, 884,149.80 and 354,201.08 is: 488,773.52
Step by Step Solution
- Step 1: Write the proportion equation
640,719.68 : 884,149.80 = 354,201.08 : x - Step 2: Convert to fraction form
640,719.68/884,149.80 = 354,201.08/x - Step 3: Cross multiply
640,719.68x = 884,149.80 × 354,201.08 - Step 4: Simplify right side
640,719.68x = 313,166,814,041.78 - Step 5: Solve for x
x = 313,166,814,041.78/640,719.68 - Step 6: Final answer
x = 488,773.52
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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.