Finding the Fourth Proportional to 1,791,840,138.72, 2,472,886,611.99 and 988,224,814.02
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Solution
The fourth proportional to 1,791,840,138.72, 2,472,886,611.99 and 988,224,814.02 is: 1,363,831,437.54
Step by Step Solution
- Step 1: Write the proportion equation
1,791,840,138.72 : 2,472,886,611.99 = 988,224,814.02 : x - Step 2: Convert to fraction form
1,791,840,138.72/2,472,886,611.99 = 988,224,814.02/x - Step 3: Cross multiply
1,791,840,138.72x = 2,472,886,611.99 × 988,224,814.02 - Step 4: Simplify right side
1,791,840,138.72x = 2,443,767,912,226,365,440 - Step 5: Solve for x
x = 2,443,767,912,226,365,440/1,791,840,138.72 - Step 6: Final answer
x = 1,363,831,437.54
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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.