Finding the Fourth Proportional to 807,422,544.20, 1,211,700,686.70 and 347,690,649.80
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Solution
The fourth proportional to 807,422,544.20, 1,211,700,686.70 and 347,690,649.80 is: 521,780,079.28
Step by Step Solution
- Step 1: Write the proportion equation
807,422,544.20 : 1,211,700,686.70 = 347,690,649.80 : x - Step 2: Convert to fraction form
807,422,544.20/1,211,700,686.70 = 347,690,649.80/x - Step 3: Cross multiply
807,422,544.20x = 1,211,700,686.70 × 347,690,649.80 - Step 4: Simplify right side
807,422,544.20x = 421,296,999,121,829,248 - Step 5: Solve for x
x = 421,296,999,121,829,248/807,422,544.20 - Step 6: Final answer
x = 521,780,079.28
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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.