Finding the Fourth Proportional to 1,206,253,659.25, 1,664,701,155.21 and 908,370,349.93
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Solution
The fourth proportional to 1,206,253,659.25, 1,664,701,155.21 and 908,370,349.93 is: 1,253,604,628.92
Step by Step Solution
- Step 1: Write the proportion equation
1,206,253,659.25 : 1,664,701,155.21 = 908,370,349.93 : x - Step 2: Convert to fraction form
1,206,253,659.25/1,664,701,155.21 = 908,370,349.93/x - Step 3: Cross multiply
1,206,253,659.25x = 1,664,701,155.21 × 908,370,349.93 - Step 4: Simplify right side
1,206,253,659.25x = 1,512,165,170,886,982,912 - Step 5: Solve for x
x = 1,512,165,170,886,982,912/1,206,253,659.25 - Step 6: Final answer
x = 1,253,604,628.92
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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.