Finding the Fourth Proportional to 998,013,517.60, 1,497,020,276.40 and 739,733,191.60
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Solution
The fourth proportional to 998,013,517.60, 1,497,020,276.40 and 739,733,191.60 is: 1,109,599,787.40
Step by Step Solution
- Step 1: Write the proportion equation
998,013,517.60 : 1,497,020,276.40 = 739,733,191.60 : x - Step 2: Convert to fraction form
998,013,517.60/1,497,020,276.40 = 739,733,191.60/x - Step 3: Cross multiply
998,013,517.60x = 1,497,020,276.40 × 739,733,191.60 - Step 4: Simplify right side
998,013,517.60x = 1,107,395,586,951,286,272 - Step 5: Solve for x
x = 1,107,395,586,951,286,272/998,013,517.60 - Step 6: Final answer
x = 1,109,599,787.40
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Double scale
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Similar ratio
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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.