Finding the Fourth Proportional to 512,276.64, 706,876.56 and 285,931.68
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Solution
The fourth proportional to 512,276.64, 706,876.56 and 285,931.68 is: 394,549.32
Step by Step Solution
- Step 1: Write the proportion equation
512,276.64 : 706,876.56 = 285,931.68 : x - Step 2: Convert to fraction form
512,276.64/706,876.56 = 285,931.68/x - Step 3: Cross multiply
512,276.64x = 706,876.56 × 285,931.68 - Step 4: Simplify right side
512,276.64x = 202,118,402,353.42 - Step 5: Solve for x
x = 202,118,402,353.42/512,276.64 - Step 6: Final answer
x = 394,549.32
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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.