Finding the Fourth Proportional to 515,108,134.24, 711,034,126.26 and 306,263,778.66
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Solution
The fourth proportional to 515,108,134.24, 711,034,126.26 and 306,263,778.66 is: 422,753,949.69
Step by Step Solution
- Step 1: Write the proportion equation
515,108,134.24 : 711,034,126.26 = 306,263,778.66 : x - Step 2: Convert to fraction form
515,108,134.24/711,034,126.26 = 306,263,778.66/x - Step 3: Cross multiply
515,108,134.24x = 711,034,126.26 × 306,263,778.66 - Step 4: Simplify right side
515,108,134.24x = 217,763,998,264,599,136 - Step 5: Solve for x
x = 217,763,998,264,599,136/515,108,134.24 - Step 6: Final answer
x = 422,753,949.69
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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.