Finding the Fourth Proportional to 1,281,335,717.99, 1,921,809,379.12 and 348,731,239.92
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Solution
The fourth proportional to 1,281,335,717.99, 1,921,809,379.12 and 348,731,239.92 is: 523,044,006.54
Step by Step Solution
- Step 1: Write the proportion equation
1,281,335,717.99 : 1,921,809,379.12 = 348,731,239.92 : x - Step 2: Convert to fraction form
1,281,335,717.99/1,921,809,379.12 = 348,731,239.92/x - Step 3: Cross multiply
1,281,335,717.99x = 1,921,809,379.12 × 348,731,239.92 - Step 4: Simplify right side
1,281,335,717.99x = 670,194,967,662,324,352 - Step 5: Solve for x
x = 670,194,967,662,324,352/1,281,335,717.99 - Step 6: Final answer
x = 523,044,006.54
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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.