Finding the Fourth Proportional to 540,918,007.28, 811,108,337.68 and 172,405,008.08
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Solution
The fourth proportional to 540,918,007.28, 811,108,337.68 and 172,405,008.08 is: 258,521,878.79
Step by Step Solution
- Step 1: Write the proportion equation
540,918,007.28 : 811,108,337.68 = 172,405,008.08 : x - Step 2: Convert to fraction form
540,918,007.28/811,108,337.68 = 172,405,008.08/x - Step 3: Cross multiply
540,918,007.28x = 811,108,337.68 × 172,405,008.08 - Step 4: Simplify right side
540,918,007.28x = 139,839,139,511,475,776 - Step 5: Solve for x
x = 139,839,139,511,475,776/540,918,007.28 - Step 6: Final answer
x = 258,521,878.79
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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.