Finding the Fourth Proportional to 816,729,009.20, 1,225,571,810.70 and 299,211,763.40
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Solution
The fourth proportional to 816,729,009.20, 1,225,571,810.70 and 299,211,763.40 is: 448,992,870.98
Step by Step Solution
- Step 1: Write the proportion equation
816,729,009.20 : 1,225,571,810.70 = 299,211,763.40 : x - Step 2: Convert to fraction form
816,729,009.20/1,225,571,810.70 = 299,211,763.40/x - Step 3: Cross multiply
816,729,009.20x = 1,225,571,810.70 × 299,211,763.40 - Step 4: Simplify right side
816,729,009.20x = 366,705,502,652,877,952 - Step 5: Solve for x
x = 366,705,502,652,877,952/816,729,009.20 - Step 6: Final answer
x = 448,992,870.98
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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.