Finding the Fourth Proportional to 1,328,867,560.20, 1,993,301,340.30 and 708,994,777.80
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Solution
The fourth proportional to 1,328,867,560.20, 1,993,301,340.30 and 708,994,777.80 is: 1,063,492,166.70
Step by Step Solution
- Step 1: Write the proportion equation
1,328,867,560.20 : 1,993,301,340.30 = 708,994,777.80 : x - Step 2: Convert to fraction form
1,328,867,560.20/1,993,301,340.30 = 708,994,777.80/x - Step 3: Cross multiply
1,328,867,560.20x = 1,993,301,340.30 × 708,994,777.80 - Step 4: Simplify right side
1,328,867,560.20x = 1,413,240,240,854,440,448 - Step 5: Solve for x
x = 1,413,240,240,854,440,448/1,328,867,560.20 - Step 6: Final answer
x = 1,063,492,166.70
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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.