Finding the Fourth Proportional to 412,128,472.05, 618,192,708.08 and 409,258,690.65
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Solution
The fourth proportional to 412,128,472.05, 618,192,708.08 and 409,258,690.65 is: 613,888,035.98
Step by Step Solution
- Step 1: Write the proportion equation
412,128,472.05 : 618,192,708.08 = 409,258,690.65 : x - Step 2: Convert to fraction form
412,128,472.05/618,192,708.08 = 409,258,690.65/x - Step 3: Cross multiply
412,128,472.05x = 618,192,708.08 × 409,258,690.65 - Step 4: Simplify right side
412,128,472.05x = 253,000,738,276,152,192 - Step 5: Solve for x
x = 253,000,738,276,152,192/412,128,472.05 - Step 6: Final answer
x = 613,888,035.98
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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.