Finding the Fourth Proportional to 515,108,133.50, 711,034,125.23 and 306,263,777.91
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Solution
The fourth proportional to 515,108,133.50, 711,034,125.23 and 306,263,777.91 is: 422,753,948.65
Step by Step Solution
- Step 1: Write the proportion equation
515,108,133.50 : 711,034,125.23 = 306,263,777.91 : x - Step 2: Convert to fraction form
515,108,133.50/711,034,125.23 = 306,263,777.91/x - Step 3: Cross multiply
515,108,133.50x = 711,034,125.23 × 306,263,777.91 - Step 4: Simplify right side
515,108,133.50x = 217,763,997,414,340,544 - Step 5: Solve for x
x = 217,763,997,414,340,544/515,108,133.50 - Step 6: Final answer
x = 422,753,948.65
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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.