Finding the Fourth Proportional to 1,403,911,689.12, 1,939,416,171.12 and 1,121,283,062.16
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Solution
The fourth proportional to 1,403,911,689.12, 1,939,416,171.12 and 1,121,283,062.16 is: 1,548,982,403.96
Step by Step Solution
- Step 1: Write the proportion equation
1,403,911,689.12 : 1,939,416,171.12 = 1,121,283,062.16 : x - Step 2: Convert to fraction form
1,403,911,689.12/1,939,416,171.12 = 1,121,283,062.16/x - Step 3: Cross multiply
1,403,911,689.12x = 1,939,416,171.12 × 1,121,283,062.16 - Step 4: Simplify right side
1,403,911,689.12x = 2,174,634,503,156,056,320 - Step 5: Solve for x
x = 2,174,634,503,156,056,320/1,403,911,689.12 - Step 6: Final answer
x = 1,548,982,403.96
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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.