Finding the Fourth Proportional to 5,215,521,764.40, 7,823,282,646.60 and 1,338,128,228.40
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Solution
The fourth proportional to 5,215,521,764.40, 7,823,282,646.60 and 1,338,128,228.40 is: 2,007,192,342.60
Step by Step Solution
- Step 1: Write the proportion equation
5,215,521,764.40 : 7,823,282,646.60 = 1,338,128,228.40 : x - Step 2: Convert to fraction form
5,215,521,764.40/7,823,282,646.60 = 1,338,128,228.40/x - Step 3: Cross multiply
5,215,521,764.40x = 7,823,282,646.60 × 1,338,128,228.40 - Step 4: Simplify right side
5,215,521,764.40x = 10,468,555,348,167,321,600 - Step 5: Solve for x
x = 10,468,555,348,167,321,600/5,215,521,764.40 - Step 6: Final answer
x = 2,007,192,342.60
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.