Finding the Fourth Proportional to 636,564,571.56, 878,137,555.46 and 372,073,766.99
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Solution
The fourth proportional to 636,564,571.56, 878,137,555.46 and 372,073,766.99 is: 513,273,849.64
Step by Step Solution
- Step 1: Write the proportion equation
636,564,571.56 : 878,137,555.46 = 372,073,766.99 : x - Step 2: Convert to fraction form
636,564,571.56/878,137,555.46 = 372,073,766.99/x - Step 3: Cross multiply
636,564,571.56x = 878,137,555.46 × 372,073,766.99 - Step 4: Simplify right side
636,564,571.56x = 326,731,948,189,141,184 - Step 5: Solve for x
x = 326,731,948,189,141,184/636,564,571.56 - Step 6: Final answer
x = 513,273,849.64
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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.