Finding the Fourth Proportional to 919,303,891.20, 1,378,955,836.80 and 737,905,363.20
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Solution
The fourth proportional to 919,303,891.20, 1,378,955,836.80 and 737,905,363.20 is: 1,106,858,044.80
Step by Step Solution
- Step 1: Write the proportion equation
919,303,891.20 : 1,378,955,836.80 = 737,905,363.20 : x - Step 2: Convert to fraction form
919,303,891.20/1,378,955,836.80 = 737,905,363.20/x - Step 3: Cross multiply
919,303,891.20x = 1,378,955,836.80 × 737,905,363.20 - Step 4: Simplify right side
919,303,891.20x = 1,017,538,907,590,663,936 - Step 5: Solve for x
x = 1,017,538,907,590,663,936/919,303,891.20 - Step 6: Final answer
x = 1,106,858,044.80
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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.