Finding the Fourth Proportional to 538,723,681.92, 743,438,901.24 and 291,205,035.36
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Solution
The fourth proportional to 538,723,681.92, 743,438,901.24 and 291,205,035.36 is: 401,863,067.82
Step by Step Solution
- Step 1: Write the proportion equation
538,723,681.92 : 743,438,901.24 = 291,205,035.36 : x - Step 2: Convert to fraction form
538,723,681.92/743,438,901.24 = 291,205,035.36/x - Step 3: Cross multiply
538,723,681.92x = 743,438,901.24 × 291,205,035.36 - Step 4: Simplify right side
538,723,681.92x = 216,493,151,523,593,760 - Step 5: Solve for x
x = 216,493,151,523,593,760/538,723,681.92 - Step 6: Final answer
x = 401,863,067.82
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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.