Finding the Fourth Proportional to 515,108,132.99, 711,034,124.53 and 306,263,777.41
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Solution
The fourth proportional to 515,108,132.99, 711,034,124.53 and 306,263,777.41 is: 422,753,947.96
Step by Step Solution
- Step 1: Write the proportion equation
515,108,132.99 : 711,034,124.53 = 306,263,777.41 : x - Step 2: Convert to fraction form
515,108,132.99/711,034,124.53 = 306,263,777.41/x - Step 3: Cross multiply
515,108,132.99x = 711,034,124.53 × 306,263,777.41 - Step 4: Simplify right side
515,108,132.99x = 217,763,996,845,970,144 - Step 5: Solve for x
x = 217,763,996,845,970,144/515,108,132.99 - Step 6: Final answer
x = 422,753,947.96
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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.