Finding the Fourth Proportional to 863,019,952.20, 1,190,895,520.50 and 486,655,448.04
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Solution
The fourth proportional to 863,019,952.20, 1,190,895,520.50 and 486,655,448.04 is: 671,543,909.99
Step by Step Solution
- Step 1: Write the proportion equation
863,019,952.20 : 1,190,895,520.50 = 486,655,448.04 : x - Step 2: Convert to fraction form
863,019,952.20/1,190,895,520.50 = 486,655,448.04/x - Step 3: Cross multiply
863,019,952.20x = 1,190,895,520.50 × 486,655,448.04 - Step 4: Simplify right side
863,019,952.20x = 579,555,793,097,756,544 - Step 5: Solve for x
x = 579,555,793,097,756,544/863,019,952.20 - Step 6: Final answer
x = 671,543,909.99
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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.