Finding the Fourth Proportional to 889,410,215.58, 1,226,670,424.58 and 781,889,642.97
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Solution
The fourth proportional to 889,410,215.58, 1,226,670,424.58 and 781,889,642.97 is: 1,078,378,551.90
Step by Step Solution
- Step 1: Write the proportion equation
889,410,215.58 : 1,226,670,424.58 = 781,889,642.97 : x - Step 2: Convert to fraction form
889,410,215.58/1,226,670,424.58 = 781,889,642.97/x - Step 3: Cross multiply
889,410,215.58x = 1,226,670,424.58 × 781,889,642.97 - Step 4: Simplify right side
889,410,215.58x = 959,120,900,318,669,312 - Step 5: Solve for x
x = 959,120,900,318,669,312/889,410,215.58 - Step 6: Final answer
x = 1,078,378,551.90
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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.