Finding the Fourth Proportional to 778,415,611.56, 1,074,212,849.95 and 439,395,446.75
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Solution
The fourth proportional to 778,415,611.56, 1,074,212,849.95 and 439,395,446.75 is: 606,365,324.77
Step by Step Solution
- Step 1: Write the proportion equation
778,415,611.56 : 1,074,212,849.95 = 439,395,446.75 : x - Step 2: Convert to fraction form
778,415,611.56/1,074,212,849.95 = 439,395,446.75/x - Step 3: Cross multiply
778,415,611.56x = 1,074,212,849.95 × 439,395,446.75 - Step 4: Simplify right side
778,415,611.56x = 472,004,235,108,859,520 - Step 5: Solve for x
x = 472,004,235,108,859,520/778,415,611.56 - Step 6: Final answer
x = 606,365,324.77
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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.