Finding the Fourth Proportional to 1,113,305,123.18, 1,536,318,979.80 and 618,299,718.14
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Solution
The fourth proportional to 1,113,305,123.18, 1,536,318,979.80 and 618,299,718.14 is: 853,230,235.27
Step by Step Solution
- Step 1: Write the proportion equation
1,113,305,123.18 : 1,536,318,979.80 = 618,299,718.14 : x - Step 2: Convert to fraction form
1,113,305,123.18/1,536,318,979.80 = 618,299,718.14/x - Step 3: Cross multiply
1,113,305,123.18x = 1,536,318,979.80 × 618,299,718.14 - Step 4: Simplify right side
1,113,305,123.18x = 949,905,592,183,472,256 - Step 5: Solve for x
x = 949,905,592,183,472,256/1,113,305,123.18 - Step 6: Final answer
x = 853,230,235.27
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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.