Finding the Fourth Proportional to 639,615.42, 882,670.59 and 353,136.06
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Solution
The fourth proportional to 639,615.42, 882,670.59 and 353,136.06 is: 487,328.49
Step by Step Solution
- Step 1: Write the proportion equation
639,615.42 : 882,670.59 = 353,136.06 : x - Step 2: Convert to fraction form
639,615.42/882,670.59 = 353,136.06/x - Step 3: Cross multiply
639,615.42x = 882,670.59 × 353,136.06 - Step 4: Simplify right side
639,615.42x = 311,702,814,430.48 - Step 5: Solve for x
x = 311,702,814,430.48/639,615.42 - Step 6: Final answer
x = 487,328.49
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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.