Finding the Fourth Proportional to 1,965,804,021.97, 2,948,717,056.20 and 655,702,477.86
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Solution
The fourth proportional to 1,965,804,021.97, 2,948,717,056.20 and 655,702,477.86 is: 983,557,393.64
Step by Step Solution
- Step 1: Write the proportion equation
1,965,804,021.97 : 2,948,717,056.20 = 655,702,477.86 : x - Step 2: Convert to fraction form
1,965,804,021.97/2,948,717,056.20 = 655,702,477.86/x - Step 3: Cross multiply
1,965,804,021.97x = 2,948,717,056.20 × 655,702,477.86 - Step 4: Simplify right side
1,965,804,021.97x = 1,933,481,080,258,384,896 - Step 5: Solve for x
x = 1,933,481,080,258,384,896/1,965,804,021.97 - Step 6: Final answer
x = 983,557,393.64
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1.5x scale
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.