Finding the Fourth Proportional to 1,293,274,621.48, 1,784,719,692.26 and 698,559,102.12
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Solution
The fourth proportional to 1,293,274,621.48, 1,784,719,692.26 and 698,559,102.12 is: 964,011,946.92
Step by Step Solution
- Step 1: Write the proportion equation
1,293,274,621.48 : 1,784,719,692.26 = 698,559,102.12 : x - Step 2: Convert to fraction form
1,293,274,621.48/1,784,719,692.26 = 698,559,102.12/x - Step 3: Cross multiply
1,293,274,621.48x = 1,784,719,692.26 × 698,559,102.12 - Step 4: Simplify right side
1,293,274,621.48x = 1,246,732,185,761,028,352 - Step 5: Solve for x
x = 1,246,732,185,761,028,352/1,293,274,621.48 - Step 6: Final answer
x = 964,011,946.92
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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.