Finding the Fourth Proportional to 2,220,372,436.76, 3,064,117,558.80 and 1,216,630,519.84
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Solution
The fourth proportional to 2,220,372,436.76, 3,064,117,558.80 and 1,216,630,519.84 is: 1,678,952,087.81
Step by Step Solution
- Step 1: Write the proportion equation
2,220,372,436.76 : 3,064,117,558.80 = 1,216,630,519.84 : x - Step 2: Convert to fraction form
2,220,372,436.76/3,064,117,558.80 = 1,216,630,519.84/x - Step 3: Cross multiply
2,220,372,436.76x = 3,064,117,558.80 × 1,216,630,519.84 - Step 4: Simplify right side
2,220,372,436.76x = 3,727,898,938,413,715,968 - Step 5: Solve for x
x = 3,727,898,938,413,715,968/2,220,372,436.76 - Step 6: Final answer
x = 1,678,952,087.81
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Double scale
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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.