Finding the Fourth Proportional to 1,618,417,515.25, 2,233,416,143.96 and 875,861,578.00
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Solution
The fourth proportional to 1,618,417,515.25, 2,233,416,143.96 and 875,861,578.00 is: 1,208,688,962.99
Step by Step Solution
- Step 1: Write the proportion equation
1,618,417,515.25 : 2,233,416,143.96 = 875,861,578.00 : x - Step 2: Convert to fraction form
1,618,417,515.25/2,233,416,143.96 = 875,861,578.00/x - Step 3: Cross multiply
1,618,417,515.25x = 2,233,416,143.96 × 875,861,578.00 - Step 4: Simplify right side
1,618,417,515.25x = 1,956,163,388,186,039,040 - Step 5: Solve for x
x = 1,956,163,388,186,039,040/1,618,417,515.25 - Step 6: Final answer
x = 1,208,688,962.99
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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.