Finding the Fourth Proportional to 1,420,092,000.40, 2,130,138,000.60 and 384,951,220.60
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Solution
The fourth proportional to 1,420,092,000.40, 2,130,138,000.60 and 384,951,220.60 is: 577,426,830.90
Step by Step Solution
- Step 1: Write the proportion equation
1,420,092,000.40 : 2,130,138,000.60 = 384,951,220.60 : x - Step 2: Convert to fraction form
1,420,092,000.40/2,130,138,000.60 = 384,951,220.60/x - Step 3: Cross multiply
1,420,092,000.40x = 2,130,138,000.60 × 384,951,220.60 - Step 4: Simplify right side
1,420,092,000.40x = 819,999,223,377,413,504 - Step 5: Solve for x
x = 819,999,223,377,413,504/1,420,092,000.40 - Step 6: Final answer
x = 577,426,830.90
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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.