Finding the Fourth Proportional to 1,412,775,217.28, 1,949,610,756.48 and 786,243,479.12
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Solution
The fourth proportional to 1,412,775,217.28, 1,949,610,756.48 and 786,243,479.12 is: 1,085,005,403.09
Step by Step Solution
- Step 1: Write the proportion equation
1,412,775,217.28 : 1,949,610,756.48 = 786,243,479.12 : x - Step 2: Convert to fraction form
1,412,775,217.28/1,949,610,756.48 = 786,243,479.12/x - Step 3: Cross multiply
1,412,775,217.28x = 1,949,610,756.48 × 786,243,479.12 - Step 4: Simplify right side
1,412,775,217.28x = 1,532,868,744,104,610,304 - Step 5: Solve for x
x = 1,532,868,744,104,610,304/1,412,775,217.28 - Step 6: Final answer
x = 1,085,005,403.09
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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.