Finding the Fourth Proportional to 538,105,778.28, 807,158,678.10 and 129,161,928.84
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Solution
The fourth proportional to 538,105,778.28, 807,158,678.10 and 129,161,928.84 is: 193,742,895.82
Step by Step Solution
- Step 1: Write the proportion equation
538,105,778.28 : 807,158,678.10 = 129,161,928.84 : x - Step 2: Convert to fraction form
538,105,778.28/807,158,678.10 = 129,161,928.84/x - Step 3: Cross multiply
538,105,778.28x = 807,158,678.10 × 129,161,928.84 - Step 4: Simplify right side
538,105,778.28x = 104,254,171,743,340,672 - Step 5: Solve for x
x = 104,254,171,743,340,672/538,105,778.28 - Step 6: Final answer
x = 193,742,895.82
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.