Finding the Fourth Proportional to 2,125,934,793.60, 3,188,902,190.40 and 979,316,937.60
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Solution
The fourth proportional to 2,125,934,793.60, 3,188,902,190.40 and 979,316,937.60 is: 1,468,975,406.40
Step by Step Solution
- Step 1: Write the proportion equation
2,125,934,793.60 : 3,188,902,190.40 = 979,316,937.60 : x - Step 2: Convert to fraction form
2,125,934,793.60/3,188,902,190.40 = 979,316,937.60/x - Step 3: Cross multiply
2,125,934,793.60x = 3,188,902,190.40 × 979,316,937.60 - Step 4: Simplify right side
2,125,934,793.60x = 3,122,945,927,408,460,288 - Step 5: Solve for x
x = 3,122,945,927,408,460,288/2,125,934,793.60 - Step 6: Final answer
x = 1,468,975,406.40
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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.