Finding the Fourth Proportional to 812,596,986.43, 1,121,452,999.49 and 460,235,660.20
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Solution
The fourth proportional to 812,596,986.43, 1,121,452,999.49 and 460,235,660.20 is: 635,164,380.65
Step by Step Solution
- Step 1: Write the proportion equation
812,596,986.43 : 1,121,452,999.49 = 460,235,660.20 : x - Step 2: Convert to fraction form
812,596,986.43/1,121,452,999.49 = 460,235,660.20/x - Step 3: Cross multiply
812,596,986.43x = 1,121,452,999.49 × 460,235,660.20 - Step 4: Simplify right side
812,596,986.43x = 516,132,661,601,897,408 - Step 5: Solve for x
x = 516,132,661,601,897,408/812,596,986.43 - Step 6: Final answer
x = 635,164,380.65
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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.