Finding the Fourth Proportional to 1,285,620,288.75, 1,774,170,895.59 and 713,415,088.62
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Solution
The fourth proportional to 1,285,620,288.75, 1,774,170,895.59 and 713,415,088.62 is: 984,521,088.99
Step by Step Solution
- Step 1: Write the proportion equation
1,285,620,288.75 : 1,774,170,895.59 = 713,415,088.62 : x - Step 2: Convert to fraction form
1,285,620,288.75/1,774,170,895.59 = 713,415,088.62/x - Step 3: Cross multiply
1,285,620,288.75x = 1,774,170,895.59 × 713,415,088.62 - Step 4: Simplify right side
1,285,620,288.75x = 1,265,720,286,704,364,544 - Step 5: Solve for x
x = 1,265,720,286,704,364,544/1,285,620,288.75 - Step 6: Final answer
x = 984,521,088.99
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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.