Finding the Fourth Proportional to 1,642,127,299.92, 2,266,117,636.68 and 889,421,762.16
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Solution
The fourth proportional to 1,642,127,299.92, 2,266,117,636.68 and 889,421,762.16 is: 1,227,392,262.33
Step by Step Solution
- Step 1: Write the proportion equation
1,642,127,299.92 : 2,266,117,636.68 = 889,421,762.16 : x - Step 2: Convert to fraction form
1,642,127,299.92/2,266,117,636.68 = 889,421,762.16/x - Step 3: Cross multiply
1,642,127,299.92x = 2,266,117,636.68 × 889,421,762.16 - Step 4: Simplify right side
1,642,127,299.92x = 2,015,534,341,677,779,968 - Step 5: Solve for x
x = 2,015,534,341,677,779,968/1,642,127,299.92 - Step 6: Final answer
x = 1,227,392,262.33
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.