Finding the Fourth Proportional to 1,315,252,029.11, 1,815,047,649.14 and 786,615,930.32
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Solution
The fourth proportional to 1,315,252,029.11, 1,815,047,649.14 and 786,615,930.32 is: 1,085,529,893.51
Step by Step Solution
- Step 1: Write the proportion equation
1,315,252,029.11 : 1,815,047,649.14 = 786,615,930.32 : x - Step 2: Convert to fraction form
1,315,252,029.11/1,815,047,649.14 = 786,615,930.32/x - Step 3: Cross multiply
1,315,252,029.11x = 1,815,047,649.14 × 786,615,930.32 - Step 4: Simplify right side
1,315,252,029.11x = 1,427,745,395,090,381,824 - Step 5: Solve for x
x = 1,427,745,395,090,381,824/1,315,252,029.11 - Step 6: Final answer
x = 1,085,529,893.51
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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.