Finding the Fourth Proportional to 1,528,194,818.44, 2,108,896,172.20 and 859,142,845.62
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Solution
The fourth proportional to 1,528,194,818.44, 2,108,896,172.20 and 859,142,845.62 is: 1,185,609,999.88
Step by Step Solution
- Step 1: Write the proportion equation
1,528,194,818.44 : 2,108,896,172.20 = 859,142,845.62 : x - Step 2: Convert to fraction form
1,528,194,818.44/2,108,896,172.20 = 859,142,845.62/x - Step 3: Cross multiply
1,528,194,818.44x = 2,108,896,172.20 × 859,142,845.62 - Step 4: Simplify right side
1,528,194,818.44x = 1,811,843,058,501,033,472 - Step 5: Solve for x
x = 1,811,843,058,501,033,472/1,528,194,818.44 - Step 6: Final answer
x = 1,185,609,999.88
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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.