Finding the Fourth Proportional to 515,108,131.99, 711,034,123.15 and 306,263,776.41
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Solution
The fourth proportional to 515,108,131.99, 711,034,123.15 and 306,263,776.41 is: 422,753,946.58
Step by Step Solution
- Step 1: Write the proportion equation
515,108,131.99 : 711,034,123.15 = 306,263,776.41 : x - Step 2: Convert to fraction form
515,108,131.99/711,034,123.15 = 306,263,776.41/x - Step 3: Cross multiply
515,108,131.99x = 711,034,123.15 × 306,263,776.41 - Step 4: Simplify right side
515,108,131.99x = 217,763,995,712,674,848 - Step 5: Solve for x
x = 217,763,995,712,674,848/515,108,131.99 - Step 6: Final answer
x = 422,753,946.58
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1.5x scale
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.