Finding the Fourth Proportional to 1,220,166,466.24, 1,684,640,533.44 and 937,405,309.12
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Solution
The fourth proportional to 1,220,166,466.24, 1,684,640,533.44 and 937,405,309.12 is: 1,294,242,239.64
Step by Step Solution
- Step 1: Write the proportion equation
1,220,166,466.24 : 1,684,640,533.44 = 937,405,309.12 : x - Step 2: Convert to fraction form
1,220,166,466.24/1,684,640,533.44 = 937,405,309.12/x - Step 3: Cross multiply
1,220,166,466.24x = 1,684,640,533.44 × 937,405,309.12 - Step 4: Simplify right side
1,220,166,466.24x = 1,579,190,980,005,404,928 - Step 5: Solve for x
x = 1,579,190,980,005,404,928/1,220,166,466.24 - Step 6: Final answer
x = 1,294,242,239.64
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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.