Finding the Fourth Proportional to 889,410,235.12, 1,226,670,451.41 and 781,889,662.51
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Solution
The fourth proportional to 889,410,235.12, 1,226,670,451.41 and 781,889,662.51 is: 1,078,378,578.74
Step by Step Solution
- Step 1: Write the proportion equation
889,410,235.12 : 1,226,670,451.41 = 781,889,662.51 : x - Step 2: Convert to fraction form
889,410,235.12/1,226,670,451.41 = 781,889,662.51/x - Step 3: Cross multiply
889,410,235.12x = 1,226,670,451.41 × 781,889,662.51 - Step 4: Simplify right side
889,410,235.12x = 959,120,945,263,954,304 - Step 5: Solve for x
x = 959,120,945,263,954,304/889,410,235.12 - Step 6: Final answer
x = 1,078,378,578.74
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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.