Finding the Fourth Proportional to 1,163,911,988.99, 1,608,299,581.11 and 828,802,724.61
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Solution
The fourth proportional to 1,163,911,988.99, 1,608,299,581.11 and 828,802,724.61 is: 1,145,243,873.61
Step by Step Solution
- Step 1: Write the proportion equation
1,163,911,988.99 : 1,608,299,581.11 = 828,802,724.61 : x - Step 2: Convert to fraction form
1,163,911,988.99/1,608,299,581.11 = 828,802,724.61/x - Step 3: Cross multiply
1,163,911,988.99x = 1,608,299,581.11 × 828,802,724.61 - Step 4: Simplify right side
1,163,911,988.99x = 1,332,963,074,810,510,336 - Step 5: Solve for x
x = 1,332,963,074,810,510,336/1,163,911,988.99 - Step 6: Final answer
x = 1,145,243,873.61
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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.