Finding the Fourth Proportional to 521,641,107.30, 782,461,660.95 and 279,776,403.30
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Solution
The fourth proportional to 521,641,107.30, 782,461,660.95 and 279,776,403.30 is: 419,664,604.95
Step by Step Solution
- Step 1: Write the proportion equation
521,641,107.30 : 782,461,660.95 = 279,776,403.30 : x - Step 2: Convert to fraction form
521,641,107.30/782,461,660.95 = 279,776,403.30/x - Step 3: Cross multiply
521,641,107.30x = 782,461,660.95 × 279,776,403.30 - Step 4: Simplify right side
521,641,107.30x = 218,914,309,220,735,072 - Step 5: Solve for x
x = 218,914,309,220,735,072/521,641,107.30 - Step 6: Final answer
x = 419,664,604.95
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1.5x scale
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.