Finding the Fourth Proportional to 1,813,432,000.40, 2,720,148,000.60 and 664,425,357.20
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Solution
The fourth proportional to 1,813,432,000.40, 2,720,148,000.60 and 664,425,357.20 is: 996,638,035.80
Step by Step Solution
- Step 1: Write the proportion equation
1,813,432,000.40 : 2,720,148,000.60 = 664,425,357.20 : x - Step 2: Convert to fraction form
1,813,432,000.40/2,720,148,000.60 = 664,425,357.20/x - Step 3: Cross multiply
1,813,432,000.40x = 2,720,148,000.60 × 664,425,357.20 - Step 4: Simplify right side
1,813,432,000.40x = 1,807,335,306,935,520,768 - Step 5: Solve for x
x = 1,807,335,306,935,520,768/1,813,432,000.40 - Step 6: Final answer
x = 996,638,035.80
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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.