Finding the Fourth Proportional to 771,212,239.60, 1,063,879,362.84 and 492,460,679.92
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Solution
The fourth proportional to 771,212,239.60, 1,063,879,362.84 and 492,460,679.92 is: 679,344,449.52
Step by Step Solution
- Step 1: Write the proportion equation
771,212,239.60 : 1,063,879,362.84 = 492,460,679.92 : x - Step 2: Convert to fraction form
771,212,239.60/1,063,879,362.84 = 492,460,679.92/x - Step 3: Cross multiply
771,212,239.60x = 1,063,879,362.84 × 492,460,679.92 - Step 4: Simplify right side
771,212,239.60x = 523,918,754,377,042,816 - Step 5: Solve for x
x = 523,918,754,377,042,816/771,212,239.60 - Step 6: Final answer
x = 679,344,449.52
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1.5x scale
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.