Finding the Fourth Proportional to 1,440,213,129.99, 1,987,813,853.16 and 875,578,033.98
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Solution
The fourth proportional to 1,440,213,129.99, 1,987,813,853.16 and 875,578,033.98 is: 1,208,492,069.14
Step by Step Solution
- Step 1: Write the proportion equation
1,440,213,129.99 : 1,987,813,853.16 = 875,578,033.98 : x - Step 2: Convert to fraction form
1,440,213,129.99/1,987,813,853.16 = 875,578,033.98/x - Step 3: Cross multiply
1,440,213,129.99x = 1,987,813,853.16 × 875,578,033.98 - Step 4: Simplify right side
1,440,213,129.99x = 1,740,486,145,468,041,216 - Step 5: Solve for x
x = 1,740,486,145,468,041,216/1,440,213,129.99 - Step 6: Final answer
x = 1,208,492,069.14
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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.