Finding the Fourth Proportional to 640,655.24, 884,036.58 and 354,129.08
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Solution
The fourth proportional to 640,655.24, 884,036.58 and 354,129.08 is: 488,660.74
Step by Step Solution
- Step 1: Write the proportion equation
640,655.24 : 884,036.58 = 354,129.08 : x - Step 2: Convert to fraction form
640,655.24/884,036.58 = 354,129.08/x - Step 3: Cross multiply
640,655.24x = 884,036.58 × 354,129.08 - Step 4: Simplify right side
640,655.24x = 313,063,060,761.75 - Step 5: Solve for x
x = 313,063,060,761.75/640,655.24 - Step 6: Final answer
x = 488,660.74
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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.