Finding the Fourth Proportional to 629,871,919.80, 944,807,879.70 and 199,050,415.80
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Solution
The fourth proportional to 629,871,919.80, 944,807,879.70 and 199,050,415.80 is: 298,575,623.70
Step by Step Solution
- Step 1: Write the proportion equation
629,871,919.80 : 944,807,879.70 = 199,050,415.80 : x - Step 2: Convert to fraction form
629,871,919.80/944,807,879.70 = 199,050,415.80/x - Step 3: Cross multiply
629,871,919.80x = 944,807,879.70 × 199,050,415.80 - Step 4: Simplify right side
629,871,919.80x = 188,064,401,305,401,408 - Step 5: Solve for x
x = 188,064,401,305,401,408/629,871,919.80 - Step 6: Final answer
x = 298,575,623.70
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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.