Finding the Fourth Proportional to 861,777,514.80, 1,292,666,272.20 and 598,749,649.20
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Solution
The fourth proportional to 861,777,514.80, 1,292,666,272.20 and 598,749,649.20 is: 898,124,473.80
Step by Step Solution
- Step 1: Write the proportion equation
861,777,514.80 : 1,292,666,272.20 = 598,749,649.20 : x - Step 2: Convert to fraction form
861,777,514.80/1,292,666,272.20 = 598,749,649.20/x - Step 3: Cross multiply
861,777,514.80x = 1,292,666,272.20 × 598,749,649.20 - Step 4: Simplify right side
861,777,514.80x = 773,983,477,012,421,760 - Step 5: Solve for x
x = 773,983,477,012,421,760/861,777,514.80 - Step 6: Final answer
x = 898,124,473.80
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Double scale
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Similar ratio
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.