Finding the Fourth Proportional to 1,192,258,857.57, 1,645,317,302.49 and 663,611,498.55
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Solution
The fourth proportional to 1,192,258,857.57, 1,645,317,302.49 and 663,611,498.55 is: 915,783,911.99
Step by Step Solution
- Step 1: Write the proportion equation
1,192,258,857.57 : 1,645,317,302.49 = 663,611,498.55 : x - Step 2: Convert to fraction form
1,192,258,857.57/1,645,317,302.49 = 663,611,498.55/x - Step 3: Cross multiply
1,192,258,857.57x = 1,645,317,302.49 × 663,611,498.55 - Step 4: Simplify right side
1,192,258,857.57x = 1,091,851,480,695,632,512 - Step 5: Solve for x
x = 1,091,851,480,695,632,512/1,192,258,857.57 - Step 6: Final answer
x = 915,783,911.99
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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.