Finding the Fourth Proportional to 425,498,320.99, 638,441,409.80 and 218,382,177.40
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Solution
The fourth proportional to 425,498,320.99, 638,441,409.80 and 218,382,177.40 is: 327,672,797.60
Step by Step Solution
- Step 1: Write the proportion equation
425,498,320.99 : 638,441,409.80 = 218,382,177.40 : x - Step 2: Convert to fraction form
425,498,320.99/638,441,409.80 = 218,382,177.40/x - Step 3: Cross multiply
425,498,320.99x = 638,441,409.80 × 218,382,177.40 - Step 4: Simplify right side
425,498,320.99x = 139,424,225,214,449,696 - Step 5: Solve for x
x = 139,424,225,214,449,696/425,498,320.99 - Step 6: Final answer
x = 327,672,797.60
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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.