Finding the Fourth Proportional to 1,440,213,115.29, 1,987,813,832.91 and 875,578,019.28
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Solution
The fourth proportional to 1,440,213,115.29, 1,987,813,832.91 and 875,578,019.28 is: 1,208,492,048.88
Step by Step Solution
- Step 1: Write the proportion equation
1,440,213,115.29 : 1,987,813,832.91 = 875,578,019.28 : x - Step 2: Convert to fraction form
1,440,213,115.29/1,987,813,832.91 = 875,578,019.28/x - Step 3: Cross multiply
1,440,213,115.29x = 1,987,813,832.91 × 875,578,019.28 - Step 4: Simplify right side
1,440,213,115.29x = 1,740,486,098,525,189,888 - Step 5: Solve for x
x = 1,740,486,098,525,189,888/1,440,213,115.29 - Step 6: Final answer
x = 1,208,492,048.88
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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.