Finding the Fourth Proportional to 1,539,648,489.60, 2,309,472,734.40 and 504,543,139.20
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Solution
The fourth proportional to 1,539,648,489.60, 2,309,472,734.40 and 504,543,139.20 is: 756,814,708.80
Step by Step Solution
- Step 1: Write the proportion equation
1,539,648,489.60 : 2,309,472,734.40 = 504,543,139.20 : x - Step 2: Convert to fraction form
1,539,648,489.60/2,309,472,734.40 = 504,543,139.20/x - Step 3: Cross multiply
1,539,648,489.60x = 2,309,472,734.40 × 504,543,139.20 - Step 4: Simplify right side
1,539,648,489.60x = 1,165,228,623,310,983,936 - Step 5: Solve for x
x = 1,165,228,623,310,983,936/1,539,648,489.60 - Step 6: Final answer
x = 756,814,708.80
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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.