Finding the Fourth Proportional to 1,379,285,440.80, 2,069,935,930.80 and 971,138,752.80
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Solution
The fourth proportional to 1,379,285,440.80, 2,069,935,930.80 and 971,138,752.80 is: 1,457,417,687.99
Step by Step Solution
- Step 1: Write the proportion equation
1,379,285,440.80 : 2,069,935,930.80 = 971,138,752.80 : x - Step 2: Convert to fraction form
1,379,285,440.80/2,069,935,930.80 = 971,138,752.80/x - Step 3: Cross multiply
1,379,285,440.80x = 2,069,935,930.80 × 971,138,752.80 - Step 4: Simplify right side
1,379,285,440.80x = 2,010,194,998,213,018,880 - Step 5: Solve for x
x = 2,010,194,998,213,018,880/1,379,285,440.80 - Step 6: Final answer
x = 1,457,417,687.99
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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.