Finding the Fourth Proportional to 640,099.13, 883,354.62 and 353,637.68
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Solution
The fourth proportional to 640,099.13, 883,354.62 and 353,637.68 is: 488,029.84
Step by Step Solution
- Step 1: Write the proportion equation
640,099.13 : 883,354.62 = 353,637.68 : x - Step 2: Convert to fraction form
640,099.13/883,354.62 = 353,637.68/x - Step 3: Cross multiply
640,099.13x = 883,354.62 × 353,637.68 - Step 4: Simplify right side
640,099.13x = 312,387,476,225.70 - Step 5: Solve for x
x = 312,387,476,225.70/640,099.13 - Step 6: Final answer
x = 488,029.84
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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.