Finding the Fourth Proportional to 420,820,478.80, 580,750,195.60 and 235,181,489.02
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Solution
The fourth proportional to 420,820,478.80, 580,750,195.60 and 235,181,489.02 is: 324,560,478.00
Step by Step Solution
- Step 1: Write the proportion equation
420,820,478.80 : 580,750,195.60 = 235,181,489.02 : x - Step 2: Convert to fraction form
420,820,478.80/580,750,195.60 = 235,181,489.02/x - Step 3: Cross multiply
420,820,478.80x = 580,750,195.60 × 235,181,489.02 - Step 4: Simplify right side
420,820,478.80x = 136,581,695,749,864,272 - Step 5: Solve for x
x = 136,581,695,749,864,272/420,820,478.80 - Step 6: Final answer
x = 324,560,478.00
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.