Finding the Fourth Proportional to 1,672,170,235.92, 2,307,464,207.64 and 929,569,078.80
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Solution
The fourth proportional to 1,672,170,235.92, 2,307,464,207.64 and 929,569,078.80 is: 1,282,732,661.89
Step by Step Solution
- Step 1: Write the proportion equation
1,672,170,235.92 : 2,307,464,207.64 = 929,569,078.80 : x - Step 2: Convert to fraction form
1,672,170,235.92/2,307,464,207.64 = 929,569,078.80/x - Step 3: Cross multiply
1,672,170,235.92x = 2,307,464,207.64 × 929,569,078.80 - Step 4: Simplify right side
1,672,170,235.92x = 2,144,947,377,859,886,592 - Step 5: Solve for x
x = 2,144,947,377,859,886,592/1,672,170,235.92 - Step 6: Final answer
x = 1,282,732,661.89
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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.