Finding the Fourth Proportional to 812,596,985.70, 1,121,452,998.42 and 460,235,659.44
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Solution
The fourth proportional to 812,596,985.70, 1,121,452,998.42 and 460,235,659.44 is: 635,164,379.57
Step by Step Solution
- Step 1: Write the proportion equation
812,596,985.70 : 1,121,452,998.42 = 460,235,659.44 : x - Step 2: Convert to fraction form
812,596,985.70/1,121,452,998.42 = 460,235,659.44/x - Step 3: Cross multiply
812,596,985.70x = 1,121,452,998.42 × 460,235,659.44 - Step 4: Simplify right side
812,596,985.70x = 516,132,660,258,793,984 - Step 5: Solve for x
x = 516,132,660,258,793,984/812,596,985.70 - Step 6: Final answer
x = 635,164,379.57
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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.