Finding the Fourth Proportional to 654,740,861.56, 903,407,509.12 and 376,228,576.68
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Solution
The fourth proportional to 654,740,861.56, 903,407,509.12 and 376,228,576.68 is: 519,117,930.88
Step by Step Solution
- Step 1: Write the proportion equation
654,740,861.56 : 903,407,509.12 = 376,228,576.68 : x - Step 2: Convert to fraction form
654,740,861.56/903,407,509.12 = 376,228,576.68/x - Step 3: Cross multiply
654,740,861.56x = 903,407,509.12 × 376,228,576.68 - Step 4: Simplify right side
654,740,861.56x = 339,887,721,318,241,728 - Step 5: Solve for x
x = 339,887,721,318,241,728/654,740,861.56 - Step 6: Final answer
x = 519,117,930.88
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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.